Ni-Nb_(2)O_(5)γ-Al_(2)O_(3)催化1,5-双-(四氢呋喃基)-3-戊酮加氢脱氧制备长链烷烃的研究  

PREPARATION OF LONG-CHAIN ALKANES FROM 1,5-BIS-(TETRAHYDROFURANYL)-3-PENTANONE CATALYZED BY Ni-Nb_(2)O_(5)γ-Al_(2)O_(3)

作　　者：闫瑞 赵杰 陶志平 杨鹤 贾丹丹 伏朝林 朱忠朋 郑伟平 Yan Rui;Zhao Jie;Tao Zhiping;Yang He;Jia Dandan;Fu Zhaolin;Zhu Zhongpeng;Zheng Weiping(SIONPEC Research Institute of Pretroleum Processing Co.,Ltd.,Beijing 100083)

机构地区：[1]中石化石油化工科学研究院有限公司,北京100083

出　　处：《石油炼制与化工》2023年第8期67-73,共7页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划项目(2021YFB3500700)。

摘　　要：设计了以γ-Al 2O_(3)为酸性载体、非贵金属Ni和Nb_(2)O_(5)为活性中心的催化剂x%Ni-y%Nb_(2)O_(5)γ-Al_(2)O_(3)(x%为Ni质量分数,x=1,2,3,4,5;y%为Nb_(2)O_(5)质量分数,y=10,20),考察催化剂中Ni、Nb_(2)O_(5)含量和反应工艺条件对该催化剂催化生物燃料含氧中间体1,5-双-(四氢呋喃基)-3-戊酮加氢脱氧反应的影响。结果表明:在反应温度为260℃、H_(2)压力为3 MPa、反应时间为24 h的条件下,4%Ni-20%Nb_(2)O_(5)γ-Al_(2)O_(3)催化1,5-双-(四氢呋喃基)-3-戊酮加氢脱氧制备长链烷烃的碳摩尔收率总和达89.6%,其中C_(11)烷烃、C_(12)烷烃和C_(13)烷烃的碳摩尔收率分别为3.8%,8.9%,76.9%;同时,4%Ni-20%Nb_(2)O_(5)γ-Al_(2)O_(3)催化剂具有良好的稳定性,连续催化反应70 h后,C_(11)~C_(13)烷烃的碳摩尔收率总和仍能保持在89.5%。A new catalyst x%Ni-y%Nb_(2)O_(5)γ-Al_(2)O_(3)(x%is the mass fraction of Ni,x=1,2,3,4,5;y%is the mass fraction of Nb_(2)O_(5),y=10,20)was designed,and the effects of Ni and Nb_(2)O_(5) content and reaction conditions on the hydrodeoxygenation of 1,5-bis-(tetrahydrofuranyl)-3-pentanone were investigated.The results showed that under the conditions of reaction temperature 260℃,pressure 3 MPa and reaction time 24 h,4%Ni-20%Nb_(2)O_(5)γ-Al_(2)O_(3) catalyst for 1,5-bis-(tetrahydrofuryl)-3-pentanone hydrodeoxidization to produce long-chain alkanes had the yields of 89.6%,of which the carbon yields of C_(11) alkanes,C_(12) alkanes and C_(13) alkanes were 3.8%,8.9%and 76.9%,respectively.Meanwhile,4%Ni-20%Nb_(2)O_(5)γ-Al_(2)O_(3) catalyst had good stability.When the reaction temperature was 260℃,the reaction pressure was 3 MPa,the liquid hourly space velocity was 2 h-1,and the volume ratio of hydrogen to oil was 200,the total yield of C_(11)-C_(13) alkanes could still keep up to 89.5%after 70 h of continuous catalytic reaction.

关 键 词：生物质 加氢脱氧 催化剂 长链烷烃 

分 类 号：TQ426[化学工程] TQ221.1