| 摘要: |
| 采用Ce和La对HZSM-5分子筛进行改性,考察在常压连续固定床反应器上混合C4烃催化裂解制低碳烯烃反应的催化性能,并对催化剂进行了S-BET、XRD表征。本文详细考察了反应温度、硅铝比及催化剂稳定性等各种因素对催化性能的影响。结果 表明,改性后催化剂的催化裂解性能明显优于未改性的催化剂,其中以Ce改性催化效果较好,在480℃时反应较适宜,丙烯在反应后的气体中体积含量达到29.8%。 |
| 关键词: C4烃 催化裂解 丙烯 HZSM-5 |
| DOI： |
| 分类号:TQ221.212 |
| 基金项目: |
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| Production of Propylene from C4 Olefins by Catalytic Cracking |
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Wang Rui, Zhang Xiucheng, Chen Liyu
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Chemical Engineering College,Northwest University,Xi’an 710069,Shanxi).
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| Abstract: |
| HZSM-5 zeolite modified by Ce and La was studied on performance of production of propylene and ethylene from C4 olefins by catalytic cracking in the fixed-bed reactor at atmospheric pressure, and catalyst was characterized by the S-BET and XRD. In this paper, a detailed study was done about effects of the reaction temperature, Si-Al ratio and the stability of catalyst and so on. The results showed that properties of the modified catalytic cracking catalysts are better than non-modified catalyst,and the catalyst modified by Ce has a better catalytic performance. The optimal reaction temperature is 480℃, and the volume of propylene reaches 29.8% of the gas after reaction. |
| Key words: C4 hydrocarbon catalytic cracking propylene HZSM-5 |
