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OALib Journal期刊
ISSN: 2333-9721
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不同碱处理制备多级孔hzsm-5催化剂及噻吩烷基化性能研究
, PP. 462-469
Keywords: na2co3,tpaoh,zsm-5,多级孔,噻吩烷基化
Abstract:
？用na2co3、tpaoh和tpa+/co32-混合碱分别处理hzsm-5分子筛,采用ft-ir、xrd、xrf、n2吸附脱附、sem、nh3-tpd及py-ftir表征手段对各类碱处理前后的hzsm-5分子筛进行表征。结果表明,3种类型的碱处理hzsm-5分子筛后,均能形成微孔-介孔多级孔道的hzsm-5(a)催化剂,并能调变催化剂的酸性,其中,tpa+/co32-混合碱处理得到的hzsm-5(tpa+/co32-)催化剂,比表面积最大,介孔数量最多。在小型固定床反应器上,考察了hzsm-5和hzsm-5(a)催化剂的噻吩烷基化性能,结果表明,hzsm-5(tpa+/co32-)催化剂因为具有适当的多级孔孔道和较多的b酸中心而表现出较高的噻吩转化率和1-己烯对噻吩的选择性。
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