Direct gas-phase epoxidation of propene with hydrogen peroxide on TS-1 zeolite in a microstructured reactor
Direct gas-phase epoxidation of propene with hydrogen peroxide on TS-1 zeolite in a microstructured reactor
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DOI：
10.1021/ie071343
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发表时间：
2008-02
影响因子：
4.2
通讯作者：
E. Klemm;Enrico Dietzsch;T. Schwarz;T. Kruppa;A. D. Oliveira;Frank Becker;G. Markowz;S. Schirrmeister;R. Schuette;K. J. Caspary;F. Schüth;D. Hönicke
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文献类型：
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作者：
E. Klemm;Enrico Dietzsch;T. Schwarz;T. Kruppa;A. D. Oliveira;Frank Becker;G. Markowz;S. Schirrmeister;R. Schuette;K. J. Caspary;F. Schüth;D. Hönicke
在TS-1催化剂涂层的微结构反应器中进行了丙烯与过氧化氢蒸汽的直接环氧化反应。在140 °C、1巴、5体积%过氧化氢和15体积%丙烯的条件下，在实验室规模下每公斤催化剂每小时获得超过1公斤环氧丙烷的生产率，这处于工业高度相关的范围内。达到了基于丙烯的>90%的对环氧丙烷的优异选择性。改进的潜力和需要在于基于过氧化氢的环氧丙烷选择性，观察到其为约25%。通过将丙烯的摩尔过量增加至约6.6，在中试装置中观察到与过氧化氢相关的环氧丙烷选择性高达60%。
Direct epoxidation of propene with hydrogen peroxide vapor was conducted in a microstructured reactor containing TS-1 catalyst coatings. At 140 °C, 1 bar, 5 vol % hydrogen peroxide, and 15 vol % propene, productivities of more than 1 kg of propene oxide per kg of catalyst and hour are obtained in lab scale, which is in an industrially highly relevant range. Excellent selectivities to propene oxide based on propene of >90% were reached. Potential and need for improvement lie in the propylene oxide selectivity based on hydrogen peroxide, which was observed to be about 25%. By increasing the molar excess of propene to about 6.6, propylene oxide selectivities related to hydrogen peroxide of up to 60% have been observed in the pilot plant.