当前位置: X-MOL 学术Solid Fuel Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Catalytic Hydrocracking of -C-O-Bridged Bonds over Mg2Si/γ-Al2O3 Catalyst
Solid Fuel Chemistry ( IF 0.8 ) Pub Date : 2022-03-12 , DOI: 10.3103/s0361521922010098
Ruiyu Wang 1 , Bingkang Sun 2 , Jiliang Zhu 2 , Xing Fan 2, 3
Affiliation  

Abstract

Nano γ-Al2O3 support was prepared by sol-gel method, and the Mg2Si/γ-Al2O3 catalyst was prepared by impregnation method from Mg2Si and the γ-Al2O3 support. The catalyst was characterized by X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy and CO2 temperature-programmed desorption analysis. The catalytic hydrocracking of lignite-related modelcompounds, 1-methoxynaphthalene (1-MON) and bibenzyl ether (BE), was investigated. Mg2Si was well distributed on the surface and in the voids of γ-Al2O3 support. The Mg2Si/γ-Al2O3 catalyst had high specific surface area, large amount of mesopores, strong basicity, and exhibited high catalytic efficiency in hydrocracking of 1-MON and BE due to the synergic effect between Mg2Si and γ-Al2O3. Under an initial hydrogen pressure of 3 MPa and reaction time of 60 min, the conversion of 1-MON and BE reached 100% when the reaction temperatures were 225 and 175°C, respectively. The selectivities for naphthalene and toluene were close to 100%, only traces of the hydrogenated products were detected. After 4 cycle tests, the catalytic activity of Mg2Si/γ-Al2O3 catalystdropped to 50%.



中文翻译:

Mg2Si/γ-Al2O3催化剂上-CO桥键的催化加氢裂化

摘要

采用溶胶-凝胶法制备纳米γ-Al 2 O 3载体,以Mg 2 Si和γ-Al 2 O 3载体为原料,采用浸渍法制备Mg 2 Si/γ-Al 2 O 3催化剂。通过X射线衍射、N 2吸附-脱附、扫描电子显微镜和CO 2程序升温脱附分析对该催化剂进行了表征。研究了褐煤相关模型化合物 1-甲氧基萘 (1-MON) 和联苄醚 (BE) 的催化加氢裂化。Mg 2 Si 很好地分布在 γ-Al 2 O 3的表面和空隙中支持。Mg 2 Si/γ-Al 2 O 3催化剂具有高比表面积、大量中孔、强碱性,由于Mg 2 Si和γ的协同作用,在1-MON和BE的加氢裂化中表现出较高的催化效率。 -Al 2 O 3。在3 MPa的初始氢气压力和60 min的反应时间下,当反应温度分别为225和175°C时,1-MON和BE的转化率分别达到100%。萘和甲苯的选择性接近 100%,仅检测到微量的氢化产物。经过4次循环测试,Mg 2 Si/γ-Al 2 O 3的催化活性催化剂降至 50%。

更新日期:2022-03-12
down
wechat
bug