求一段汉译英校对? Molecular sieves of SAPO-11, ZSM-22 and ZSM-23 which have one-dimensional 10-ring straight channels are the better support for the hydroisomerization catalyst of lubricant base oil, ZSM-22 and ZSM-23 molecular sieves have better activity when be used for long-chain alkanes hydroisomerization ,but the hydroisomerization selectivity are lower than SAPO-11. In order to adjust the pore structure and acidity distribution of the catalyst, the conventional hydrothermal method was adopted in the ethylamine-ethylenediamine double-template system, and KOH as the alkali source, the silica sol as silicon source, aluminum sulfate as aluminum source,to prepare the ZSM-22/ZSM-23 molecular sieve in the optimizing synthesis conditions, and then noble metals was loaded to prepared a hydroisomerization catalysts. the studies indicated that the catalyst with ZSM-22/ZSM-23 co-crystal molecular sieve support has smaller pore size and more weakly acidity, which showed a better shape-selectivity and isomerization rearrangement functions than catalysts with single ZSM-22 and ZSM-23 as support respectively. 供参考。查看更多2个回答 . 3人已关注