求一段汉译英校对？ 具有一维十元环直孔道的sapo-11、zsm-22和zsm-23分子筛是润滑油基础油加氢异构催化剂的较好载体，zsm-22分子筛和zsm-23分子筛用于长链烷烃加氢异构反应时活性较好，但是加氢异构选择性却低于sapo-11分子筛。为了调控催化剂的孔道结构和酸性分布，本论文采用常规的水热法在乙胺-乙二胺双模板剂体系中，以koh为碱源，硅溶胶为硅源，硫酸铝为铝源，通过优化合成条件制备了zsm-22/zsm-23共结晶分子筛，并以其为载体负载贵金属制备成加氢异构催化剂，研究表明，与单独的zsm-22和zsm-23为载体负载贵金属制备的催化剂相比较，zsm-22/zsm-23共结晶分子筛为载体制备的催化剂具有更小的孔径和更弱的酸性，表现了较好的孔道择形功能和异构重排功能。 molecular sieves of sapo-11, zsm-22 and zsm-23 which have one-dimensional 10-ring straight channels are the better carrier for the hydroisomerization 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 control the pore structure and acidity distribution of the catalyst, the conventional hydrothermal method was adopted in the ethylamine-ethylenediamine template system, and koh as the alkali source, the silica sol as silicon source, aluminum sulfate as aluminum source, through the optimizing of synthesis conditions, the zsm-22/zsm-23 intergrowth molecular sieve was prepared, and noble metals was loaded to prepared a hydroisomerization catalysts, the studies indicated that, three catalysts were loaded the same noble metal, but the catalyst with zsm-22/zsm-23 intergrowth molecular sieve as carrier has smaller pore size and more weakly acidity, which showed a better shape-selective and isomerization rearrangement functions than catalysts with single zsm-22 and zsm-23 as carrier.查看更多
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