不同结构的分子筛在1-丁烯中催化裂解性能的研究（英文）

发布时间：2018-04-16 12:28

本文选题：SAPO- + 丁烯　；参考：《分子催化》2017年01期

【摘要】：我们合成了不同Si含量的SAPO-18,并且利用了XRD、SEM、NH_3-TPD进行了表征分析.利用微反固定床反应器评价了代表不同结构的H-ZSM-5(MFI)、H-Beta(*BEA)、SAPO-18(AEI)系列分子筛的丁烯催化裂解性能.实验结果表明分子筛的结构和酸性对反应结果都有明显影响,分子筛酸量的增加提高了1-丁烯的转化率,但酸量过高会引发氢转移、芳构化副反应,从而降低丙烯的选择性;分子筛孔口大小、孔道结构决定了可以获得的最高丙烯选择性.具有八元环孔口、笼形结构特点的SAPO-18-0.8在线时间20 min时1-丁烯裂解中转化率为60.7%,获得的丙烯选择性达到59.1%.
[Abstract]:We synthesized different Si content of SAPO-18, and the use of XRD, SEM, NH_3-TPD were characterized and analyzed. Using the micro fixed bed reactor was evaluated on behalf of different structures of H-ZSM-5 (MFI), H-Beta (*BEA), SAPO-18 (AEI) catalytic cracking performance of molecular sieve. The experimental results show that the structure of molecular sieve and acidity have significant effect on the reaction results, the molecular sieve was the increase of conversion rate of 1- butene, but the acidity can be caused by a high hydrogen transfer, aromatization reaction, thereby reducing the selectivity of propylene; molecular sieve hole size, the highest pore structure determines the selectivity of propylene can be obtained. With eight yuan orifice ring, cage structure characteristics of SAPO-18-0.8 online time 20 min 1- butene cracking in the conversion rate was 60.7%, the selectivity of propylene reached 59.1%.

【作者单位】：东北石油大学化学化工学院;克拉玛依职业技术学院;大庆应用技术研究院;
【基金】：PetroChina Innovation Foundation,China(Grant No.2012D-5006-0403) PetroChina Technology Development(2014A-2610)
【分类号】：O643.36

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