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.
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)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
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)。
关键词
生物质
加氢脱氧
催化剂
长链烷烃
biomass
hydrodeoxygenation
catalyst
long-chain alkanes
