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CO2加氢制甲醇Cu-Zn-Al水滑石催化剂的改性研究 被引量:2
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作者 孙新凯 罗驹华 +2 位作者 顾明敏 陈晓雯 江陈烨 《工业催化》 CAS 2020年第10期37-41,共5页
CO2加氢制甲醇既能有效缓解温室效应带来的全球气温升高问题,也能促进CO2的资源化利用,成为研究热点之一。对Cu-Zn-Al水滑石(CZA-LDH)开展改性研究,以Cu(NO3)2·3H2O、Zn(NO3)2·6H2O和Al(NO3)3·9H2O为原料,以NaOH和NaCO3... CO2加氢制甲醇既能有效缓解温室效应带来的全球气温升高问题,也能促进CO2的资源化利用,成为研究热点之一。对Cu-Zn-Al水滑石(CZA-LDH)开展改性研究,以Cu(NO3)2·3H2O、Zn(NO3)2·6H2O和Al(NO3)3·9H2O为原料,以NaOH和NaCO3为沉淀剂,采用共沉淀法制备CZA-LDH,并在制备过程中引入聚乙二醇(PEG)、聚乙烯吡咯烷酮(PVP)和三乙醇胺(TEA),焙烧后得到4组催化剂。XRD、FT-IR、N2吸附-脱附、SEM表征结果及催化性能测试数据表明,引入TEA的CZA-LDH焙烧后得到的复合金属氧化物催化剂(CZA-LDO-TEA)表现出最优的性能。这是因为TEA能够破坏表面晶体结构,促进催化剂中CuO组分的还原,提高了CO2的化学吸附能力,从而提高了催化剂的CO2转化率。 展开更多
关键词 催化化学 Cu-Zn-Al水滑石 加氢催化剂 配体助剂
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Strategies for engineering metal-organic frameworks as efficient photocatalysts 被引量:12
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作者 沈丽娟 梁若雯 吴棱 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2015年第12期2071-2088,共18页
Environmental pollution and energy deficiency represent major problems for the sustainability of the modern world. Photocatalysis has recently emerged as an effective and environmentally friendly technique to address ... Environmental pollution and energy deficiency represent major problems for the sustainability of the modern world. Photocatalysis has recently emerged as an effective and environmentally friendly technique to address some of these sustainability issues,although the key to the success of this approach is dependent on the photocatalysts themselves. Based on their attractive physic chemical properties,including their ultrahigh surface areas,homogeneous active sites and tunable functionality,metal-organic frameworks(MOFs) have become interesting platforms for the development of solar energy conversion devices. Furthermore,MOFs have recently been used in a wide variety of applications,including heterogeneous photocatalysis for pollutant degradation,organic transformations,hydrogen production and CO2 reduction. In this review,we have highlighted recent progress towards the application of MOFs in all of these areas. We have collected numerous reported examples of the use of MOFs in these areas,as well as providing some analysis of the key factors influencing the efficiency of these systems. Moreover,we have provided a detailed discussion of new strategies that have been developed for enhancing the photocatalytic activity of MOFs. Finally,we have provided an outlook for this area in terms of the future challenges and potential prospects for MOFs in photocatalysis. 展开更多
关键词 Metal-organic frameworks PHOTOCATALYSIS LIGAND FUNCTIONALIZATION PHOTOSENSITIZATION CO-CATALYST Composite
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