助剂对含硫前体加氢裂化催化剂反应性能的影响  

Effect of additives on reaction performance of sulphur-containing precursor hydrocracking catalyst

作　　者：姜艳 王继锋 唐兆吉 Jiang Yan;Wang Jifeng;Tang Zhaoji(Sinopec Catalyst Dalian Co.,Ltd.,Dalian 116023,Liaoning,China;Dalian Research Institute of Petroleum and Petrochemicals,Sinopec,Dalian 116045,Liaoning,China)

机构地区：[1]中石化催化剂大连有限公司,辽宁大连116023 [2]中国石油化工股份有限公司大连石油化工研究院,辽宁大连116045

出　　处：《工业催化》2022年第7期25-30,共6页Industrial Catalysis

基　　金：国家自然科学基金联合基金项目(U19B2003);国家自然科学基金科学中心项目(22088101)。

摘　　要：以氧化铝和改性Y分子筛为载体,硫代钼酸铵和硝酸镍为活性组分前驱体,采用等体积浸渍法制备不同种类助剂的含硫前体加氢裂化催化剂。通过BET、XRD、IR、HRTEM、等对催化剂进行表征。表征结果表明,添加不同种类助剂对催化剂表面物化性质产生一定影响。加入酸性助剂使催化剂表面的总酸量和中强酸酸量均呈增加趋势。同时,催化剂活性相片晶长度和层数得到很好改善,产生更多反应中心,提高催化剂性能。加入碱性助剂,催化剂酸量降低,片晶的长度和层数均减少,不利于催化剂反应性能发挥。评价结果表明,加入酸性助剂乙二胺四乙酸(EDTA),催化剂的转化率和选择性达到最佳状态。Using alumina and modified Y zeolite as carriers,ammonium thiomolybdate and nickel nitrate as active component precursors,sulfur-containing precursor hydrocracking catalysts with different additives were prepared by equal volume impregnation method.The catalysts were characterized by BET,FT-IR,XRD and HRTEM.The results showed that the addition of different additives has a certain effect on the surface physicochemical properties of the catalyst.The total acid content and medium strong acid content on the catalyst surface increased with the addition of acid additives.At the same time,the active phase,crystal length and number of layers of the catalyst were well improved,more reaction centers were generated,and the service performance of the catalyst was improved.With the addition of basic additives,the acid content of the catalyst was reduced,and the length and number of lamellae were reduced,which was not conducive to the performance of the catalyst.The evaluation results showed that the conversion and selectivity of the catalyst reached the best state by adding additive of ethylenediamine tetraacetic acid.

关 键 词：催化化学 硫代钼酸铵 加氢裂化催化剂 反应性能 有机助剂 

分 类 号：TE624.9[石油与天然气工程—油气加工工程] TQ426.95[化学工程]