| 任申勇,张莉,柳黄飞,胡清勋,王久江,张炳跃,郭巧霞,申宝剑.碱改性ZSM-11分子筛及其催化裂化增产烯烃性能[J].分子催化,2023,37(3):234-240 |
| 碱改性ZSM-11分子筛及其催化裂化增产烯烃性能 |
| Alkali Treatment of Molecular Sieve ZSM-11 and Its Catalytic Cracking for Olefin Production |
| 投稿时间：2022-10-26 修订日期：2023-01-10 |
| DOI：10.16084/j.issn1001-3555.2023.03.003 |
| 中文关键词: ZSM-11 晶种法辅助合成 碱处理 催化裂化 烯烃收率 |
| 英文关键词:ZSM-11 seed-assist synthesis alkali treatment catalytic cracking olefin yield |
| 基金项目:国家自然科学基金创新研究群体科学基金(22021004) |
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| 中文摘要: |
| 通过晶种辅助法合成ZSM-11分子筛, 并对其进行碱处理从而制备了改性样品ZSM-11-AT. 采用XRD、 N2吸附和脱附、 XRF、 TEM、 NH3-TPD和Py-IR等表征手段对样品ZSM-5、 ZSM-11和ZSM-11-AT的物化性质进行了表征和对比分析, 发现改性样品ZSM-11-AT的比表面积、 孔隙结构和酸性质均得到了改善. 采用固定床反应装置对样品的催化裂化性能进行了评价, 对样品ZSM-5、 ZSM-11和ZSM-11-AT的反应物转化率和产物分布进行了对比研究. 结果表明, ZSM-11和ZSM-11-AT在烯烃乙烯和丙烯产率方面优于ZSM-5. 与ZSM-11相比, ZSM-11-AT的催化性能得到了进一步的提高. |
| 英文摘要: |
| Zeolite ZSM-11 was synthesized by seed-assist method and treated with alkali to obtain the modified sample ZSM-11-AT. The physical and chemical properties of the samples ZSM-5, ZSM-11 and ZSM-11-AT were characterized and compared using XRD, N2 adsorption and desorption, XRF, TEM, NH3-TPD, and Py-IR. The specific surface area, pore structure and acid property of modified sample ZSM-11-AT had been improved. The catalytic performances of the samples were evaluated using a catalytic cracking fixed-bed device. The reactant conversion and products distribution between ZSM-5, ZSM-11 and ZSM-11-AT were compared. The results showed that ZSM-11 and ZSM-11-AT had advantage over ZSM-5 in terms of olefin (ethylene and propylene) yield. The catalytic performance of ZSM-11-AT was further improved compared with ZSM-11. |
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