镍磷物质的量比对负载型Ni2P/MCM-41催化剂结构及加氢脱硫性能的影响  

Effect of Ni/P mol ratio on structure and performance of hydrodesulfurization of Ni_2P/MCM-41 catalyst

作　　者：宋华[1] 姜楠[1] 宋华林[2] 李锋[1] 代敏[1,3] 万霞[1,3] 徐晓伟[1] 

机构地区：[1]东北石油大学石油与天然气化工省重点实验室,黑龙江大庆163318 [2]牡丹江医学院医学影像学院,黑龙江牡丹江157011 [3]CPE新疆石油勘察设计研究院(有限公司),新疆克拉玛依834000

出　　处：《燃料化学学报》2015年第3期338-343,共6页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(21276048)

摘　　要：以MCM-41为载体,采用一种简捷、温和法制备了负载型Ni2P/M CM-41催化剂。用H2程序升温还原(H2-TPR)、X射线衍射(XRD)、N2吸附比表面积测定(BET)和X射线光电子能谱(XPS)分析对催化剂进行了表征。以1%(质量分数)二苯并噻吩(DBT)的十氢萘溶液为原料,在连续固定床反应装置上,研究了初始Ni/P物质的量比对催化剂HDS活性的影响,并考察了催化剂的稳定性。结果表明,初始Ni/P物质的量比为1/2和1/3的前驱体,在390℃下还原时得到单一的Ni2P相。初始Ni/P物质的量为1/2时,得到的催化剂活性最好。在反应温度340℃、压力3.0 MPa、氢/油体积比500、质量空速2.0 h-1时,DBT的转化率接近100%。This paper introduces a simple and mild route to prepare Ni2P catalysts.Ni2P/MCM-41 catalysts were successfully prepared using MCM-41 as the support.The catalysts were characterized by H2 temperature program reduction（H2-TPR）,X-ray diffraction（XRD）,N2-adsorption specific surface area measurements（BET）,and X-ray photoelectron spectroscopy（XPS） analysis.The effects of initial Ni/P molar ratio on hydrodesulfurization（HDS） performance of catalysts and catalyst stability were studied with a lab-scale continuous flow type fixedbed reactor systemusing a feed containing 1%dibenzothiophene（DBT） in decahydronaphthalene.The results indicated that a pure Ni2P phase was obtained when the initial Ni/P molar ratios were 1/2 and 1/3.The catalyst prepared with initial Ni/P mol ratios of 1/2 exhibited the highest activity.At a reaction temperature of 340 ℃,a pressure of 3.0 MPa,a H2/oil volume ratio of 500,and a weight hourly space velocity（WHSV） of 2.0 h^（-1）,the HDS conversion was close to 100%.

关 键 词：加氢脱硫 磷化镍 次磷酸铵 氯化镍 二苯并噻吩 

分 类 号：O643.361[理学—物理化学]