The Al_(2)O_(3)and Mn/Al_(2)O_(3)sorbents highly utilized in destructive sorption of NF_(3)

NF_(3)is commonly used as an etching and cleaning gas in semiconductor industry,however it is a strongly greenhouse gas.Therefore,the destruction of disposal NF_(3)is an urgent task to migrate the greenhouse effect.Among the technologies for NF_(3)abatement,the destructive sorption of NF_(3)over metal oxides sorbents is an effective way.Thus,the search for a highly reactive and utilized sorbent for NF_(3)destruction is in great demand.In this work,AlOOH supported on carbon-sphere(AlOOH/CS)as precursors were synthesized hydrothermally and heat-treated to prepare the Al_(2)O_(3)sorbents.The influence of AlOOH/CS hydrothermal temperatures on the reactivity of derived Al_(2)O_(3)sorbents for NF_(3)destruction was investigated,and it is shown that the Al2O3 from AlOOH/CS hydro-thermalized at 120℃is superior to others.Subsequently,the optimized Al_(2)O_(3)was covered by Mn(OH)x to prepare Mn/Al_(2)O_(3)sorbents via changing hydrothermal temperatures and Mn loadings.The results show that the Mn/Al_(2)O_(3)sorbents are more utilized than bare Al_(2)O_(3)in NF_(3)destructive sorption due to the promotional effect of Mn_(2)O_(3)as surface layer on the fluorination of Al_(2)O_(3)as substrate,especially the optimal 5%Mn/Al2O3(160℃)exhibits a utilization percentage as high as 90.4%,and remarkably exceeds all the sorbents reported so far.These findings are beneficial to develop more efficient sorbents for the destruction of NF_(3).

失活石灰石自活化增强循环捕集CO_(2)特性

钙循环工艺是一种低成本高效率捕集CO_(2)技术,运行过程需不断补充新鲜吸收剂并排出失活吸收剂,实现失活钙基吸收剂原位资源化利用具有重要意义。为研究颗粒状石灰石失活后自活化特性,运用双固定床反应器制备了失活石灰石,分析了自活化后石灰石碳酸化转化率随循环次数的变化规律,采用XRD、SEM、N_(2)吸附等分析测试手段探究了自活化提高失活石灰石循环捕集CO_(2)性能机理。结果表明,失活石灰石置于环境中可吸收空气中水分生成Ca(OH)_(2),吸水率φ达100%后,继续吸水生成氢氧化钙水合物,极限吸水率为130%。不同程度自活化后的石灰石循环捕集CO_(2)性能均有不同程度提高,随吸水率变化呈线性升高趋势。与分析纯CaCO3相比,失活石灰石对吸水率变化更敏感,随吸水率升高其循环捕集CO_(2)性能提高更快。吸水率为130%时,自活化后石灰石循环捕集CO_(2)性能甚至优于新鲜石灰石。微观结构分析结果显示:新鲜石灰石因高温烧结而失活过程中,CaO晶粒尺寸由41.9 nm长大至72.2 nm,孔隙结构发生坍塌阻塞,比孔容和比表面积显著降低。经过自活化,煅烧后的石灰石中CaO晶粒尺寸降低,原本密实的表面重新生成孔隙结构;吸水率为130%时,晶粒尺寸降至35.1 nm,比孔容和比表面积分别恢复至新鲜石灰石的70.5%和107.6%,特别是10~100 nm孔隙得以再生,因此失活石灰石循环捕集CO_(2)性能恢复。虽然自活化过程会加剧失活石灰石颗粒磨损速率,但吸水率100%的自活化石灰石磨损导致直径每小时减小量仅为颗粒直径的0.55%。综上所述,自活化后的失活石灰石完全可替代新鲜石灰石,作为补充钙基吸收剂用于钙循环捕集CO_(2)。

Supported ionic liquid sorbents for CO_2 capture from simulated flue-gas

Supported ionic liquid(IL) sorbents for CO_2 capture were prepared by impregnating tetramethylammonium glycinate([N1111][Gly]) into four types of porous materials in this study. The CO_2 adsorption behavior was investigated in a thermogravimetric analyzer(TGA). Among them, poly(methyl methacrylate)(PMMA)-[N1111][Gly]exhibits the best CO_2 adsorption properties in terms of adsorption capacity and rate. The CO_2 adsorption capacity reaches up to 2.14 mmol·g-1 sorbent at 35 °C. The fast CO_2 adsorption rate of PMMA-[N1111][Gly] allows 60 min of adsorption equilibrium time at 35 °C and much shorter time of 4 min is achieved at 75 °C. Further, Avrami's fractional-order kinetic model was used and fitted well with the experiment data, which shows good consistency between experimental results and theoretical model. In addition, PMMA-[N1111][Gly] remained excellent durability in the continuous adsorption–desorption cycling test. Therefore, this stable PMMA-[N1111][Gly] sorbent has great potential to be used for fast CO_2 adsorption from flue-gas.

O_2/CO_2气氛下燃煤的钙基脱硫规律的实验研究

对含硫量较高的煤种在不同气氛和工况条件下 ,SO2 的排放和吸收过程 ,开展了较为系统的实验和分析工作。实验结果表明 :较之空气气氛 ,高CO2 浓度对煤燃烧过程中SO2 的排放有重要影响 ,并可显著提高钙基脱硫剂的高温脱硫效率。这些结果为利用新型O2 CO2 循环燃烧方式下污染排放的综合治理技术奠定了基础。

CeO_2掺杂对CaO基吸收剂CO_2捕获性能的影响

以P123作为软模板剂,通过均相沉淀法制备了CeO_2掺杂的CaO基吸收剂,研究了CeO_2掺杂对CO_2捕获的影响。结果表明,CeO_2掺杂可促进表面氧物种的生成,从而促进CaO与CO_2的碳酸化反应。CaO-CeO_2的相互作用一方面促进了从Ca到表面氧物种的电子转移;另一方面,由于部分Ca离子对晶格中Ce离子的取代,晶格的电中性被打破,有利于CeO_2中晶格氧的逸出,以及氧空位和O^(2-)的生成。本实验制备的纯CaO吸收剂的碳酸化反应活化能为28.1 kJ/mol,而掺杂CeO_2后活化能显著降低,且当Ce/Ca(物质的量比)为0.25时达到最低值10.2 kJ/mol。另外,CeO_2的掺杂有利于CaO的分散,进而减缓CaO烧结。CeO_2掺杂的吸收剂在碳酸化/煅烧循环中表现出良好的CO_2捕获性能和循环稳定性。

负载PO43-的离子交换树脂膜在烟气中变湿吸附CO_(2)的性能研究

基于磷酸根(PO_(4)^(3−))在纳米界面上的可逆水解反应,负载PO_(4)^(3−)的纳米多孔材料能够实现低能耗变湿吸附空气中的CO_(2),但PO4变湿吸附剂在烟气中的CO_(2)捕集性能尚未有系统的实验研究。基于负载PO_(4)^(3−)的离子交换树脂膜,探究了PO_(4)^(3−)变湿吸附剂在不同进气CO_(2)浓度(体积分数,下同)、混合气体温度及混合气体流量下的CO_(2)吸附性能。结果表明,吸附环境中进气CO_(2)浓度和混合气体温度的提高,可以有效增加PO_(4)^(3−)变湿吸附剂的CO_(2)平衡吸附量。当吸附环境中的进气CO_(2)浓度从3.5%提高至15.0%时,PO_(4)^(3−)变湿吸附剂的CO_(2)平衡吸附量从0.22 mol/kg提高至0.33 mol/kg;吸附环境中的进气CO_(2)浓度一定时(5.0%),混合气体温度从10℃提高至50℃,PO_(4)^(3−)变湿吸附剂的CO_(2)平衡吸附量从0.19 mol/kg提高至0.25 mol/kg。此外,基于对微观尺度气体扩散和干燥吸附的相关机制的研究,发现随着入口处混合气体流量和混合气体温度的提高,可以有效缩短PO_(4)^(3−)变湿吸附剂的吸附饱和时间。当混合气体流量从5 L/min增大至20 L/min时,PO_(4)^(3−)变湿吸附剂的CO_(2)吸附饱和时间从135 min缩短至43 min;当混合气体温度从10℃升高至50℃时,PO_(4)^(3−)变湿吸附剂的CO_(2)吸附饱和时间从120 min缩短至43 min。PO_(4)^(3−)变湿吸附剂在较高进气CO_(2)浓度、混合气体温度和混合气体流量下的吸附性能提升,为实现烟气中低能耗捕集CO_(2)提供了可能。

Recent progress of amine modified sorbents for capturing CO2 from flue gas

Under the Paris agreement, China has committed to reducing CO_2 emissions by 60%–65% per unit of GDP by 2030.Since CO_2 emissions from coal-fired power plants currently account for over 30% of the total carbon emissions in China, it will be necessary to mitigate at least some of these emissions to achieve this goal. Studies by the International Energy Agency(IEA) indicate CCS technology has the potential to contribute 14% of global emission reductions, followed by 40% of higher energy efficiency and 35% of renewable energy, which is considered as the most promising technology to significantly reduce carbon emissions for current coal-fired power plants.Moreover, the announcement of a Chinese national carbon trading market in late 2017 signals an opportunity for the commercial deployment of CO_2 capture technologies.Currently, the only commercially demonstrated technology for post-combustion CO_2 capture technology from power plants is solvent-based absorption. While commercially viable, the costs of deploying this technology are high. This has motivated efforts to develop more affordable alternatives, including advanced solvents, membranes,and sorbent capture systems. Of these approaches, advanced solvents have received the most attention in terms of research and demonstration. In contrast, sorbent capture technology has less attention, despite its potential for much lower energy consumption due to the absence of water in the sorbent. This paper reviews recent progress in the development of sorbent materials modified by amine functionalities with an emphasis on material characterization methods and the effects of operating conditions on performance. The main problems and challenges that need to be overcome to improve the competitiveness of sorbent-based capture technologies are discussed.

Study on Zn_2SiO_4 Formation Kinetics and Activity Stability of Desulfurization Sorbent

A new industrial S Zorb sorbent(Ni/Zn O-P) was prepared by using the spray drying technique. The other two traditional sorbents(Ni/Zn O-M and Ni/Zn O-H) were prepared in exactly the same way except the use of different silica-alumina binder matrices. The XRD, Rietveld quantitative phase analysis, BET, and laser particle size analysis were employed to characterize their physico-chemical properties. The deactivation mechanism and desulfurization kinetics of sorbent was investigated on a water vapor aging treatment device. It was shown that both the water vapor pressure and reaction temperature significantly could influence the formation rate of inactive Zn2 Si O4, which could decrease the sulfur storage capacity of sorbents. The Zn2 Si O4 content profiles could be fitted into the zero order equation, from which the apparent rate constant k and the activation energy E a were calculated. The matrix P greatly raised the E a of Zn2 Si O4 formation due to the less bridged hydroxyl silanol groups on its surface, which accounted for the high stability of Ni/Zn O-P. The desulfurization performance of the fresh and aged sorbents showed that the overall average sulfur conversion of Ni/Zn O-P(aged) was 92%, which was close to that of fresh sorbents(95%), and was higher than that of Ni/Zn O-M(aged)(86%) and Ni/Zn O-H(aged)(90%). Based on these findings, the application of Ni/Zn O-P can greatly improve the long-term running stability of the industrial unit.

CO2 capture over molecular basket sorbents:Effects of SiO2 supports and PEG additive

The objective of this work is to study the influences of silica supports and PEG additive on the sorption performance of molecular basket sorbent（MBS） for COcapture consisting of polyethylenimine and one of the following supports: SBA-15（2-D structure）, TUD-1（3-D sponge-like structure） and fumed silica HS-5（3-D disordered structure）. Effects of the supports regarding pore structures and pore properties, the PEI loading amount as well as the sorption temperature were examined. Furthermore, polyethylene glycol（PEG） was introduced as an additive into the sorbents and its effect was investigated at different PEI loadings and sorption temperatures. The results suggest that the pore properties of MBS（after PEI loading） play a more important role in the COsorption capacity, rather than those of the supports alone.MBS with 3D pore structure exhibits higher COsorption capacity and amine efficiency than those with 2D-structured support. Among the sorbents studied, fumed silica（HS-5） based MBS showed the highest COsorption capacity in the temperature range of 30-95 °C, probably due to its unique interstitial pores formed by the aggregation of polymer-loaded SiOparticles. It was found that the temperature dependence is directly related to the PEI surface coverage layers. The more PEI surface coverage layers, the higher diffusion barrier for COand the stronger temperature dependence of COcapacity. 3D MBS exceeds 2D MBS at the same PEI coverage layers due to lower diffusion barrier. Adding PEG can significantly enhance the COsorption capacity and improve amine efficiency of all MBS, most likely by alleviating the diffusion barrier within PEI bulk layers through the inter-molecular interaction between PEI and PEG.

Efficient Theoretical Screening of Solid Sorbents for CO₂Capture Applications

By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The ab initio thermodynamic technique has the advantage of allowing identification of thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. For a given solid, the first step is to attempt to extract thermodynamic properties from thermodynamic databases and the available literatures. If the thermodynamic properties of the compound of interest are unknown, an ab initio thermodynamic approach is used to calculate them. These properties expressed conveniently as chemical potentials and heat of reactions, which obtained either from databases or from calculations, are further used for computing the thermodynamic reaction equilibrium properties of the CO2 absorption/desorption cycles. Only those solid materials for which lower capture energy costs are predicted at the desired process conditions are selected as CO2 sorbent candidates and are further considered for ex- perimental validations. Solid sorbents containing alkali and alkaline earth metals have been reported in several previous studies to be good candidates for CO2 sorbent applications due to their high CO2 absorption capacity at moderate work- ing temperatures. In addition to introducing our computational screening procedure, in this presentation we will sum- marize our results for solid systems composed by alkali and alkaline earth metal oxides, hydroxides, and carbonates/bicarbonates to validate our methodology. Additionally, applications of our computational method to mixed solid systems of Li2O with SiO2/ZrO2 with different mixing ratios, our preliminary results showed that increasing the Li2O/SiO2 ratio in lithium silicates increases their corresponding turnover temperatures for CO2 capture reactions. Overall these theoretical predictions are found to be in good agreement with available experimental findings.

Study on the Effect of Preparation Parameters of K₂CO₃/Al₂O₃Sorbent on CO₂Capture Capacity at Flue Gas Operating Conditions

In this paper, study on the effect of preparation conditions of K2CO3/Al2O3 sorbent was done. Box-Behnken design was applied to study the influence of four parameters involve initial solution concentration, impregnation time and calcination step temperature and time. A quadratic model was used to correlate the sorbent capture capacity. The model was used to calculate the optimum conditions for preparing sorbent. From the analysis of variance (ANOVA), the most influential factor on each experimental design response was identified. The potassium-based sorbents used in this study were prepared by impregnating K2CO3 on Al2O3 support. The CO2 capture capacity was measured in the presence of H2O in a fixed-bed reactor at CO2 capture temperature of 60°C using breakthrough curves. The optimum sorbent prepared by this method showed CO2 capture capacity of 77.21 mg CO2/g sorbent. It was observed that the experimental values obtained were in good agreement with the values predicted by the model, with relatively small errors between the predicted and the actual values. The results obtained in this study can be used as basic data for study on design and operating condition optimization of CO2 capture process using these sorbents.

CO_(2) capture by double metal modified CaO-based sorbents from pyrolysis gases

High-temperature pyrolysis technology can effectively solve the problem of municipal solid waste pollution.However,the pyrolysis gas contains a large amount of CO_(2),which would adversely affect the subsequent utilization.To address this problem,a novel method of co-precipitation modification with Ca,Mg and Zr metals was proposed to improve the CO_(2)capture performance.X-ray diffraction(XRD)patterns and energy dispersive X-ray spectroscopy analysis showed that the two inert supports MgO and CaZrO_(3)were uniformly distributed in the modified calcium-based sorbents.In addition,the XRD results indicated that CaZrO_(3)was produced by the reaction of ZrO_(2)and CaO at high temperatures.The effects of doping ratios,adsorption temperature,calcination temperature,CO_(2)concentration and calcination atmosphere on the adsorption capacity and cycle stability of the modified calcium-based sorbent were studied.The modified calcium-based sorbent achieved the best CO_(2)capture performance when the doping ratio was 10:1:1 with carbonation at 700℃ under 20%CO_(2)/80%N_(2)atmosphere and calcination at 900℃ under100%N_(2)atmosphere.After ten cycles,the average carbonation conversion rate of Ca-10 sorbent was 72%.Finally,the modified calcium-based sorbents successfully reduced the CO_(2)concentration of the pyrolysis gas from 37%to 5%.

HCl-Induced Hg^(0)Transformation over CuMn_(2)O_(4)Sorbent

CuMn_(2)O_(4)spinel has been regarded as a highly efficient sorbent for Hg^(0)capture from flue gas.The regenerability and recyclability of CuMn_(2)O_(4)sorbent are mainly associated with the mercury speciation adsorbed on its surface.However,the effect mechanism of HCl on Hg^(0)transformation over CuMn_(2)O_(4)sorbent is still elusive.Experiments were conducted to understand the effect of HCl on Hg^(0)transformation over CuMn_(2)O_(4)sorbent.The results indicate thatCuMn_(2)O_(4)sorbent is a mesoporousmaterial and possesses a good thermal stability.CuMn_(2)O_(4)shows>95%Hg^(0)removal efficiency in a wide temperature window of 50-350℃.The favorable electron-transfer environment caused by the mixed valence states of Cu and Mn cations is responsible for the excellent Hg^(0)removal performance of CuMn_(2)O_(4)sorbent.CuMn_(2)O_(4)shows a higherHg^(0)adsorption capacity of 4774.57μg/g.Hg^(0)adsorption process over CuMn_(2)O_(4)sorbent can bewell described by the developed kinetic model.Hg^(0)removal efficiency of CuMn_(2)O_(4)sorbent does not depend on the presence of HCl.Mercury species adsorbed on the CuMn_(2)O_(4)sorbent in the presence of HCl mainly exist in the forms of Hg^(O)and HgCl_(2)O_(8)·H_(2)O.HCl shows a significant effect on mercury speciation over CuMn_(2)O_(4)sorbent.Most of Hg^(O)species will be transformed into HgCl_(2)O_(8)·H_(2)O in the presence of HCl.

Effect of K_(2)CO_(3) doping on CO_(2) sorption performance of silicate lithium-based sorbent prepared from citric acid treated sediment

In this paper,a low-cost and environmental-friendly leaching agent citric acid(C_(6)H_(8)O_(7))was used to treat the sediment of Dianchi Lake(SDL)to synthesize lithium silicate(Li_(4)SiO_(4))based CO_(2)sorbent.The results were compared with that treated with strong acid.Moreover,the effects of preparation conditions,sorption conditions and desorption conditions on the CO_(2)sorption performance of prepared Li_(4)SiO_(4)were systematically studied.Under optimal conditions,the Li_(4)SiO_(4)sorbent was successfully synthesized and its CO_(2)sorption capacity reached 31.37%(mass),which is much higher than that synthesized from SDL treated with strong acid.It is speculated that the presence of some elements after C_(6)H_(8)O_(7)treatment may promote the sorption of synthetic Li_(4)SiO_(4)to CO_(2).In addition,after doping with K_(2)CO_(3),the CO_(2)uptake increases from the original 12.02%and 22.12%to 23.96%and 32.41%(mass)under the 20%and 50%CO_(2)partial pressure,respectively.More importantly,after doping K_(2)CO_(3),the synthesized Li_(4)SiO_(4)has a high cyclic stability under the low CO_(2)partial pressure.

钙铜复合吸收剂的一步法合成及其CO_(2)捕集性能

采用一步法制备了钙铜复合吸收剂颗粒,研究了制备参数对钙铜复合吸收剂颗粒中钙铜物质的量之比的影响。结果表明:通过调节钙铜前驱体混合溶液中的钙铜物质的量之比和吸附时间,可以获得钙铜物质的量之比为1、元素均匀分布的钙铜复合吸收剂颗粒;在固定床反应器上开展了煅烧还原-氧化-碳酸化循环实验,发现钙铜复合吸收剂颗粒的氧化性能非常稳定,而CO_(2)捕集性能较稳定,初始CO_(2)吸附量(每克吸收剂吸附CO_(2)的质量)为0.18 g/g,10次循环后CO_(2)吸附量的保持率为56%。

High-temperature H_2S Removal with Calcium-based Sorbent

The H2S removal characteristics of Taxada lime tinder the high temperature of 600-900℃ have been investigated. The test results indicated that this kind of sorbent almost was inert to H2S When temperature lowered down to 600℃,while its reactivity increased with increased temperature and the equilibrium conversion reached up to over 60% at temperatLlre of 900℃.However, side reactions of H2S in conjunction with high-temperature decomposition and mineral catalysis to elemental sulfur and sulfur dioxide were testified.

CCUS技术及镁基功能材料在其中的应用

综述了碳捕集、利用与存储(CCUS)技术的研究进展,特别是分析了MgO、Mg/Al水滑石等镁基功能材料在CO_(2)捕集和碳资源转化中的应用研究。讨论了不同类型的镁基材料所具有的不同理化性质和特征结构以及其在不同的应用领域展现出理想的应用效果,介绍了研究者在镁基材料上面的改性修饰工作,总结展望了CCUS技术和镁基功能材料未来的发展趋势。

2型糖尿病合并肥胖患者脂联素水平与胰岛素抵抗的相关性

目的研究2型糖尿病合并肥胖患者脂联素水平和胰岛素抵抗之间的相关性,探讨脂联素在2型糖尿病合并肥胖患者发生胰岛素抵抗中的作用。方法选择30例2型糖尿病合并肥胖患者、25例2型糖尿病患者及25例非糖尿病对照人员(其中13例为肥胖者),检测体质指数、腰/臀比值、空腹血糖、糖化血红蛋白、血清空腹胰岛素、血脂、脂联素水平,计算胰岛素抵抗指数和胰岛素敏感指数。分析血清脂联素与胰岛素抵抗的相关性。结果⑴糖尿病肥胖组的检测体质指数、糖化血红蛋白、空腹血糖、胰岛素抵抗指数、血清空腹胰岛素、腰/臀比值均高于对照肥胖组,脂联素、胰岛素敏感指数低于对照肥胖组(P<0.05)。⑵糖尿病非肥胖组甘油三酯、糖化血红蛋白、空腹血糖、胰岛素抵抗指数、血清空腹胰岛素均高于对照非肥胖组,胰岛素敏感指数、脂联素低于对照非肥胖组(P<0.05)。(3)糖尿病肥胖组甘油三酯、胆固醇、体质指数、糖化血红蛋白、空腹血糖、胰岛素抵抗指数、血清空腹胰岛素、腰/臀比值均高于糖尿病非肥胖组,胰岛素敏感指数、脂联素低于糖尿病非肥胖组(P<0.05)。结论脂联素与2型糖尿病肥胖患者的胰岛素抵抗发生有关,脂联素降低易导致胰岛素抵抗,脂联素水平可作为2型糖尿病合并肥胖患者发生胰岛素抵抗的监测标准。

CO_(2)吸附强化CH_(4)/H_(2)O重整制氢催化剂研究进展

CO_2吸附强化CH_4/H_2O重整制氢是提供低成本高纯氢气和实现CO_2减排的方法之一。其中,催化剂和吸附剂是该工艺的重要组成部分,其活性与选择性制约了反应速率和产率,寿命长短关系到生产成本。综述了CO_2吸附强化CH_4/H_2O重整制氢催化剂和吸附剂的研究现状及存在的问题,机械混合的催化剂与吸附剂在反应过程中存在吸附产物包覆催化活性位点的问题,导致催化剂活性迅速下降。针对该问题,进一步探讨了不同结构双功能复合催化剂的结构特性、研究现状及其在循环-再生过程中存在的问题,核壳型双功能催化剂具有吸附组分与催化剂组分相对独立、催化组分分散分布和比表面积大等优点,在吸附强化制氢中有进一步研究的潜力。利用双功能催化剂的结构特点,实现反复循环再生过程中催化与脱碳反应的匹配,是推动CO_2吸附强化CH_4/H_2O重整制氢技术工业化发展的关键。

混合模式吸附剂固相萃取-气相色谱-质谱法测定皮革中的磷酸三(2-氯乙基)酯

磷酸三（2-氯乙基）酯（TCEP）是一种皮革生产中常用的加工助剂，其具有致癌、神经毒性和生殖毒性，被欧洲化学品管理局列入禁用的第二批授权物质清单。由于皮革产品基质复杂，采用常用的固相萃取（ SPE）方法提取对TCEP的回收率不高。Silica-WCX是一种自制的含有羧基与烷基的新型混合模式吸附剂。研究表明，通过在酸性条件下使其羧基保持质子化状态，能有效增强 Silica-WCX 对极性化合物 TCEP 的萃取性能，使 TCEP 的回收率得到明显提高。本文以 Silica-WCX为 SPE材料，建立了测定皮革中 TCEP的 SPE-GC-MS方法。该方法的线性范围为0.10-100.0μg/L，定量限（ S/N＝10）为44.46 ng/kg，不同添加水平下 TCEP的平均回收率在91.45％-99.98％之间，相对标准偏差（ RSD）在4.33％~5.97％之间。该方法简便快捷，灵敏度高，定量限低于欧盟《化学品的注册、评估、授权和限制》（ registration，evaluation，authorization and restriction of chemicals，REACH）法规的限量要求，适用于皮革及其制品中 TCEP的测定。