石油炼制与化工 ›› 2012, Vol. 43 ›› Issue (2): 65-70.
• 催化剂 • 上一篇 下一篇
杨在峰1,龙化云1,王祥生1,2,郭新闻1,2
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摘要: 以不同温度水热处理的纳米HZSM-5为母体制备了Ga/HZSM-5催化剂,并对该催化剂在FCC汽油芳构化上的性能进行考察。结果表明:以600 oC水热处理、硝酸洗涤的HZSM-5为母体制备的Ga/HZSM-5(GaHS600)的芳构化性能最优,当温度为480 oC,WHSV为1 h-1时,GaHS600上所得产品中芳烃和(C3+C4)体积分数分别为58.3%和7.6%。在本实验考察条件下,金属二次改性对Ga/HZSM-5芳构化性能的提高并无有利影响。
关键词: 芳构化 , 水热处理 , HZSM-5 , FCC汽油
Abstract: Ga/HZSM-5 catalysts were prepared using nano-scale HZSM-5 hydrothermally treated under various temperatures as base materials. The aromatization performances of Ga/HZSM-5 catalysts were investigated using full rang FCC gasoline as feed. Results showed that Ga/HZSM-5 catalyst prepared with nano-HZSM-5 hydrothermally treated under 600 ℃ followed by HNO3 washing exhibited the best aromatization performance: under a reaction temperature of 480 ℃ and WHSV of 1 h-1,the volume fraction of aromatics and (C3+C4 ) in the product was 58.3% and 7.6%, respectively. When a second metal, such as Fe, Cu and Cr, was introduced into Ga/HZSM-5 catalyst, without positive effect on its aromatization performance was observed under the testing conditions.
Key words: aromatization, hydrothermal treatment, HZSM-5, FCC gasoline
杨在峰 龙化云 王祥生 郭新闻. Ga改性HZSM-5催化剂芳构化性能的考察[J]. 石油炼制与化工, 2012, 43(2): 65-70.
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