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固体超强酸SO2-4/Mx Oy催化合成PESA、MA/SAS及MA/SSS聚合物阻垢剂的工艺研究

Synthesis of PESA,MA/SAS,MA/SSS Polymer Scale Inhibitors Catalyzed by Solid Super Acids SO4^2-/MxOy
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摘要 为了进一步揭示固体超强酸SO4^2-/MxOy“一锅法”催化合成马来酸酐类共聚物阻垢剂的作用机理,采用“分步合成法”探讨了以固体超强酸SO4^2-/ZnO或SO4^2-/TiO2-SiO2为催化剂,马来酸酐(MA)为催化底物,分别与马来酸酐(MA)、烯丙基磺酸钠(SAS)、苯乙烯基磺酸钠(SSS)发生共聚作用,合成共聚物阻垢剂PESA、MA/SAS及MA/SSS,并对其碳酸钙垢的阻垢效率进行评价。结果表明,采用“分步合成法”制备的共聚物阻垢剂对碳酸钙垢的阻垢效率分别为95.8%(MA/SAS)、90%(PESA)及93%(MA/SSS),与“一锅法”的阻垢效率基本一致。同时,实验采用固体酸SO4^2-/ZnO或SO4^2-/TiO2-SiO2分别对马来酸酐(MA)、烯丙基磺酸钠(SAS)及苯乙烯基磺酸钠(SSS)的环氧化反应进行评价。结果表明,固体超强对马来酸酐(MA)环氧化作用时,可成功地分离出马来酸酐的环氧化物———环氧马来酸,相比催化底物烯丙基磺酸钠(SAS)和苯乙烯基磺酸钠(SSS)而言,实验并未分离出相应的环氧化物。另外,以环氧琥珀酸的生成率为固体超强酸的催化活性指标,在较优的催化条件下,实验成功地评价了不同类型固体超强酸SO4^2-/MxOy催化环氧化反应的催化活性。结果表明,在相同条件下,固体超强酸SO4^2-/ZnO、SO4^2-/Al2O3、SO4^2-/Fe2O3、SO4^2-/ZrO2、SO4^2-/TiO2-SiO2、SO4^2-/SiO2-Al2O3及SO4^2-/ZrO2-TiO2对马来酸酐的环氧化作用,环氧琥珀酸的生成率分别为20%、12%、8%、10.2%、8.9%、7.1%及9.8%,其对应的催化剂催化活性为SO4^2-/ZnO>SO4^2-/Al2O3>SO4^2-/ZrO2>SO4^2-/ZrO2-TiO2>SO4^2-/TiO2-SiO2>SO4^2-/Fe2O3>SO4^2-/SiO2-Al2O3。 To explore further the pathway of co-polymers of maleic anhydride as scale inhibitor promoted by solid super acid SO4^2-/MxOy in“one-pot”way,the experiments applied an approach of“step by step reaction”to explore co-polymerization made of maleic anhydride(MA)respectively with maleic anhydride(MA),sodium allysulfonate(SAS)and Sodium styrene sulfonate(SSS)to synthesize co-polymer scale inhibitors of PESA,MA/SAS and MA/SSS by solid super acid SO4^2-/ZnO or SO4^2-/TiO2-SiO2 as a catalyst,and the evaluation on efficiency of scaling inhibition of CaCO3 was made.The efficiency of co-polymer scale inhibitors PESA,MA/SAS and MA/SSS,which were made by means of“step by setp reaction”,on scaling inhibition of CaCO3 were 95.8%(MA/SAS),90%(PESA)and 93%(MA/SSS),respectively.They are almost agreeable with co-polymer scale inhibitors made by“one-pot”way in scale-inhibiting efficiency.Simultaneously,epoxidations of maleic anhydride(MA),sodium allysulfonate(SAS)and sodium styrene sulfonate(SSS)were respectively promoted by solid super acid SO4^2-/ZnO or SO4^2-/TiO2-SiO2 as a catalyst.It obviously showed that epoxide of maleic anhydride is successfully made and isolated to confirmed to be cis-epoxysuccinic acid by 1HNMR,13CNMR and ESI-MS,in contrast to that of sodium allysulfonate(SAS)and sodium styrene sulfonate(SSS).In addition,the trials had estimated catalytic activities of various solid super acids SO4^2-/MxOy in epoxidation under the optimal conditions.The results demonstrated that under the same conditions,the catalytic activities of solid super acids SO4^2-/MxOy performed to be SO2-ZnO>SO4^2-/Al2O3>SO4^2-/ZrO2>SO4^2-/ZrO2-TiO2>SO4^2-/TiO2-SiO2>SO4^2-/Fe2O3>SO4^2-/SiO2-Al2O3 by yields of cis-epoxysuccinic acid of 20%,12%,8%,10.2%,8.9%,7.1%and 9.8%.
作者 姚元勇 吴兰艳 唐帮成 付蓉 YAO Yuanyong;WU Lan-yan;TANG Bang-cheng;FU Rong(School of Material and Chemical Engineering,Tongren University,Tongren 554300,China)
出处 《化学试剂》 CAS 北大核心 2020年第5期595-600,共6页 Chemical Reagents
基金 贵州省科技厅联合基金项目(黔科合LH字[2015]7229号)。
关键词 固体超强酸 共聚物阻垢剂 马来酸酐 环氧琥珀酸 阻垢性能 solid super acid co-polymer scale inhibitor maleic anhydride cis-epoxysuccinic acid scaling inhibition
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