Development of heavy oil hydrocracking catalysts using amorphous silica-alumina and zeolites as catalyst supports
Development of heavy oil hydrocracking catalysts using amorphous silica-alumina and zeolites as catalyst supports
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DOI：
10.1016/s0926-860x(02)00121-7
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发表时间：
2002-07-10
影响因子：
5.5
通讯作者：
Masuda, T
中科院分区：
文献类型：
--
作者：
Ali, MA;Tatsumi, T;Masuda, T
本研究工作的总体目标是使用无定形硅铝（阿萨）载体与USY和β-沸石组合制备加氢裂化催化剂。三个支撑：即硅铝、超稳Y和β-沸石，以AP-1为粘结剂制备挤出物，而两种金属对即Ni-W和Ni-Mo通过使用初湿含浸技术的共浸渍负载在挤出物上。然后将催化剂在550 ℃下煅烧2小时。在固定床流动反应系统中，以脱硫减压瓦斯油（DS-VGO）为原料，测试了催化剂的活性。催化剂的催化评价结果表明，单独使用β沸石以及与阿萨组合使用，具有作为开发重油加氢裂化催化剂的载体的潜力。β-沸石的弱酸性和强酸性的平衡提供了控制裂化，而二氧化硅-氧化铝的高表面积和更大的孔可用于生产稳定的加氢裂化和加氢处理催化剂。(C)2002 Elsevier Science B. V.保留所有权利。
The overall objective of this research work was to prepare hydrocracking catalysts using amorphous silica-alumina (ASA) supports in combination with USY and beta-zeolites. Three supports: namely silica-alumina, USY and beta-zeolites were selected to prepare the extrudates using AP-1 as a binder, while two metal pairs: namely Ni-W and Ni-Mo were loaded on the extrudates through co-impregnation using incipient wetness technique. The catalysts were then calcined at 550 degreesC for 2 h. The catalysts were tested in a fixed-bed flow reaction system for their activity, using desulfurized vacuum gas oil (DS-VGO) as a feedstock. The catalytic evaluation results of the cataiysts showed that beta-zeolite alone and in combination with the ASA used in this study, has a potential as a support for developing heavy oil hydrocracking catalysts. A balance of weak and strong acidities of beta-zeolite provides control cracking, while high surface area and bigger pores of silica-alumina may be useful for producing stable hydrocracking and hydrotreating catalysts. (C) 2002 Elsevier Science B.V. All rights reserved.