一种改善基于Y型沸石的催化剂在异丁烷-丁烯烷基化反应中的性质和性能的简便方法。
A facile way to improve zeolite Y-based catalysts' properties and performance in the isobutane-butene alkylation reaction.
作者信息
Zhou Shunli, Zhang Chengxi, Li Yongxiang, Shao Bingzhang, Luo Yibin, Shu Xingtian
机构信息
State Key Laboratory of Catalytic Material and Reaction Engineering, Research Institute of Petroleum Processing, Sinopec Beijing 100083 China
出版信息
RSC Adv. 2020 Aug 5;10(49):29068-29076. doi: 10.1039/d0ra03762a.
Different amounts of SiO were added to the AlO binders to investigate the binder effect on zeolite Y-based catalysts. The added SiO improved the mesopore volume and acidity of the catalysts. Characterization results showed that the catalysts' acid amount increased with increasing the SiO amount in the binder, which achieved maximum value when 12% SiO was added to the binder. The doped SiO in AlO binders improved the AlO phase transformation temperature, which is crucial for Al species to break out of the phase energy and migrate into the zeolite. The lifetime of catalyst Y-AlO-12SiO is 3.7 times higher than that of Y-AlO-0SiO, and the selectivity of the target products simultaneously improved by 7 percentage point. This work should bring some inspiration to the design and application of zeolite-based catalysts.
向AlO粘结剂中添加不同量的SiO，以研究粘结剂对Y型分子筛基催化剂的影响。添加的SiO改善了催化剂的中孔体积和酸度。表征结果表明，随着粘结剂中SiO量的增加，催化剂的酸量增加，当粘结剂中添加12%的SiO时达到最大值。AlO粘结剂中掺杂的SiO提高了AlO的相变温度，这对于Al物种突破相能并迁移到沸石中至关重要。催化剂Y-AlO-12SiO的寿命比Y-AlO-0SiO高3.7倍，目标产物的选择性同时提高了7个百分点。这项工作应为沸石基催化剂的设计和应用带来一些启示。
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