分子筛-氧化铝基FCC汽油异构/加氢脱硫催化剂研究Study on the Catalysts Supported on Molecular Sieve-Alumina Composite for FCC Gasoline Isomerization/Hydrodesulfurization
梁乃森,许楠,张舜光,段艳,王佳敏,侯凯湖
摘要(Abstract):
采用等体积浸渍法分别制备了以SAPO-11/γ-Al2O3,Hβ/γ-Al2O3,HY/γ-Al2O3,MCM-41/γ-Al2O3复合物为载体的负载型Co-Mo催化剂,采用BET、NH3-TPD、FT-IR等技术表征了催化剂载体。在固定床反应装置上,以噻吩和1-己烯分别作为加氢脱硫和烯烃异构反应的探针分子,考察了催化剂的异构化性能和加氢脱硫性能,研究了复合载体MCM-41/γ-Al2O3配比及其磷酸(P)和柠檬酸(CA)改性对催化剂催化性能的影响。结果表明,MCM-41:γ-Al2O3质量比为7:3的复合物是适宜的催化剂载体;P或CA改性增加了载体的B酸中心和L酸中心以及AB/AL比值;载体P或CA改性皆对催化剂的加氢脱硫性能有明显的促进作用,而未能明显改善催化剂的异构性能。
关键词(KeyWords): 异构;加氢脱硫;复合载体;催化剂
基金项目(Foundation): 河北省自然科学基金(B2010000036)
作者(Author): 梁乃森,许楠,张舜光,段艳,王佳敏,侯凯湖
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