贵金属和载体对催化剂催化脱氧裂化性能的影响  

Effects of Precious Metals and Supports on Catalytic Hydrodeoxygenation and Hydrocracking Performance over Catalysts

作　　者：杜君臣 赵永彥 夏文正[1] 陈玉保[2] 陶峰[1] 张爱敏[1] 

机构地区：[1]昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,云南昆明650106 [2]云南师范大学,云南昆明650500

出　　处：《稀有金属材料与工程》2015年第9期2210-2215,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(21266032)

摘　　要：采用浸渍法制备了一系列分别负载活性组分Pt,Pd,Ru的γ-Al2O3载体催化剂和分别以固体酸γ-Al2O3,Si O2-Al2O3,USY-Al2O3为载体的Pd催化剂。通过XRD、HRTEM、H2-TPR、NH3-TPD、BET等分析表征技术和以油酸甲酯为模型化合物的反应体系,考察了贵金属及载体性质对催化剂催化加氢脱氧性能和催化裂化性能的影响。结果表明:贵金属及其粒子大小是影响催化剂催化加氢脱氧活性的主要因素;载体的酸强度、酸量是影响催化剂催化裂化性能的主要因素。同时,该性能也受比表面积和孔结构特征的影响;Pd/USY-Al2O3在系列催化剂中表现出了良好的催化加氢脱氧活性和最佳的催化裂化活性。Several γ-Al2O3 supported active metal（Pt, Pd, Ru） catalysts and various Pd catalysts with various solid acid supports（γ-Al2O3, Si O2-Al2O3, USY-Al2O3） were prepared by impregnation, and effects of properties of precious metals and supports on hydrodeoxygenation and hydrocracking performance over catalysts were studied by XRD, HRTEM, H2-TPR, NH3-TPD, BET and other analytical characterization techniques and a reaction system with methyl oleate as model compounds. The results show that the metal properties of the active components and their sizes are decisive factors for hydrodeoxygenation conversion; the carrier acidity is extremely important for the product selectivity. In addition, the specific surface area and the pore structure of catalysts are also important factors; Pd/USY-Al2O3 in catalysts has a good catalytical hydrodeoxygenation activity and the best catalytical hydrocracking activity.

关 键 词：贵金属 载体 催化剂 加氢脱氧 加氢裂化 

分 类 号：TE624.91[石油与天然气工程—油气加工工程]