CAJ | 학술논문

采用溶胶-凝胶法制备了 TiO2-Al2O3复合载体，以柠檬酸为络合剂，浸渍法制备了负载型 Ni2P/TiO2-Al2O3催化剂前体，程序升温 H2还原法制备了 Ni2P/TiO2-Al2O3催化剂，并用 X 射线衍射（XRD）、N2吸附比表面积（BET）测定技术对催化剂的结构和性质进行了表征，考察了浸渍方法、Ni/P 摩尔比、Ni2P 负载量对其进行的二苯并噻吩（DBT）加氢脱硫（HDS）性能的影响。结果表明，当 Ni/P 比低于1∶1时，能得到单一的 Ni2P 物相；当 Ni/P 比为2∶1时，开始出现 Ni3P 物相。采用 Ni/P 比为1∶1、Ni2P 负载量为30%、采用共浸渍方法制备的 Ni2P/TiO2-Al2O3催化剂具有最好的活性，在360℃、3.0MPa、氢油比500(体积比）、液时体积空速2.0h?1的条件下反应4h 时，二苯并噻吩转化率为99.5%。
채용용효-응효법제비료 TiO2-Al2O3복합재체，이저몽산위락합제，침지법제비료부재형 Ni2P/TiO2-Al2O3최화제전체，정서승온 H2환원법제비료 Ni2P/TiO2-Al2O3최화제，병용 X 사선연사（XRD）、N2흡부비표면적（BET）측정기술대최화제적결구화성질진행료표정，고찰료침지방법、Ni/P 마이비、Ni2P 부재량대기진행적이분병새분（DBT）가경탈류（HDS）성능적영향。결과표명，당 Ni/P 비저우1∶1시，능득도단일적 Ni2P 물상；당 Ni/P 비위2∶1시，개시출현 Ni3P 물상。채용 Ni/P 비위1∶1、Ni2P 부재량위30%、채용공침지방법제비적 Ni2P/TiO2-Al2O3최화제구유최호적활성，재360℃、3.0MPa、경유비500(체적비）、액시체적공속2.0h?1적조건하반응4h 시，이분병새분전화솔위99.5%。
The TiO2-Al2O3 complex support was prepared by the sol-gel method. A nickel phosphide catalyst,Ni2P/TiO2-Al2O3 with citric acid (CA) as chelating agent,was prepared by impregnation method using citric acid (CA) as complexing agent. The catalysts were characterized by X-ray diffraction (XRD) and N2-adsorption specific surface area measurements (BET). The catalytic performance of Ni2P/TiO2-Al2O3 was investigated by hydrodesulfurization (HDS) of dibenzothiophene (DBT). The effects of different,immersion sequences,Ni/P molar ratios and Ni2P loadings on catalytic activity were studied. The results showed that,when the Ni/P molar ratio was less than 1∶1,the single Ni2P phase can be obtained. However,Ni3P phase can be observed with the Ni/P molar ratio of 2∶1. The Ni2P/TiO2-Al2O3 prepared by co-impregnation method with Ni/P molar ratio of 1∶1,a loading of 30% exhibits the optimized catalytic performance. When reaction temperature was 360℃,pressure was 3.0MPa,and hydrogen/oil ratio was 500,and liquid hourly space velocity was 2.0h?1,the conversion of dibenzothiophene HDS was 99.5%.