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无黏结剂Zn/ZSM-11催化剂的异丁烷和二甲醚芳构化催化性能 被引量:1
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作者 王军峰 李志刚 +3 位作者 张爽 王玉忠 刘盛林 徐龙伢 《工业催化》 CAS 2017年第9期43-47,共5页
采用常规浸渍法制备系列Zn/ZSM-11催化剂,对其进行N2吸附-脱附和Py-IR表征,并用于催化异丁烷和二甲醚芳构化反应。结果表明,氧化铝成型Zn/ZSM-11催化剂(Cat-A)的BET比表面积和孔体积最大,无黏结剂Zn/ZSM-11分子筛催化剂(Cat-C)的最小;... 采用常规浸渍法制备系列Zn/ZSM-11催化剂,对其进行N2吸附-脱附和Py-IR表征,并用于催化异丁烷和二甲醚芳构化反应。结果表明,氧化铝成型Zn/ZSM-11催化剂(Cat-A)的BET比表面积和孔体积最大,无黏结剂Zn/ZSM-11分子筛催化剂(Cat-C)的最小;氧化硅成型Zn/ZSM-11催化剂(Cat-B)的微孔体积与Cat-C的差别不明显。催化剂的B酸量及B酸/L酸顺序为:Cat-A>Cat-B>Cat-C。与Cat-A和Cat-B相比,Cat-C上异丁烷转化率和产物中芳烃收率最高。 展开更多
关键词 催化剂工程 无黏结剂 zn/zsm-11催化剂 异丁烷 二甲醚 芳构化
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Differences between Zn/HZSM-5 and Zn/HZSM-11 zeolite catalysts in alkylation of benzene with dimethyl ether 被引量:4
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作者 Hui Liu Huijuan Wei +5 位作者 Wenjie Xin Chao Song Sujuan Xie Zhenni Liu Shenglin Liu Longya Xu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2014年第5期617-624,共8页
HZSM-11 zeolite supported Zn catalysts with different Zn contents (xZn/HZSM-11A) were prepared. In the alkylation of benzene with dimethyl ether (DME) in a fixed bed reactor, the catalyst with Zn content of 6 wt% ... HZSM-11 zeolite supported Zn catalysts with different Zn contents (xZn/HZSM-11A) were prepared. In the alkylation of benzene with dimethyl ether (DME) in a fixed bed reactor, the catalyst with Zn content of 6 wt% (6Zn/HZSM-11A) showed appropriate performance. Focus was put on the comparison between 6Zn/HZSM-5 and 6Zn/HZSM-11 with the same crystal size of 600-800 nm, and also with the similar BET surface area, micropore volume, Si/Al2 molar ratio, and acidity. In the alkylation of benzene with DME, the 6Zn/HZSM-11 showed better activity and stability, and especially enhanced the conversion of benzene and selectivities to xylene and trimethylbenzene, compared with the 6Zn/HZSM-5. This was mainly related to the higher adsorption capacity and adsorption-desorption rates to the three adsorbates (benzene, m-xylene and 1,3,5-trimethylbenzene) over the 6Zn/HZSM-11 in comparison with the 6Zn/HZSM-5. 展开更多
关键词 dimethyl ether BENZENE zn/zsm-11 zn/zsm-5 SORPTION
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