低碳化学与化工2024，Vol.49Issue(6)：63-72,10.DOI:10.12434/j.issn.2097-2547.20240093
水滑石基Ni/Al2O3催化剂催化玉米秸秆加氢裂解制二元醇和芳香族单体性能研究
Study on performance of hydrotalcite-derived Ni/Al2O3 catalyst in hydrocracking of corn stover into diols and aromatic monomers
摘要
Abstract
Biomass is one of the most potential alternatives of fossil fuel.The production of high value-added chemicals from biomass is an effective way to realize the diversified application of biomass.A hydrotalcite-derived Ni/Al2O3 catalyst was prepared via urea precipitation and temperature-programmed reduction,which was analyzed with X-ray diffraction(XRD).The catalytic performance of Ni/Al2O3 catalysts hydrocracking of corn stover was investigated in water-methanol mixed solvent.The results show that Ni/Al2O3 catalyst exhibits good catalytic performance,and the corn stover conversion rate is up to 100%,and the diols yield is 38.8%,and the phenolic monomers yield is 13.6%under the optimum conditions(V(H2O):V(CH3OH)=7:3,240℃and 3.0 MPa H2).V(H2O):V(CH3OH)and temperature show notable impacts on corn stover conversion rate and small yields of molecule products.Ni/Al2O3 catalyst and atmosphere influence small molecule products as well as products distribution.Cyclic test of the catalyst after one cycle reveals that the yields of diols and aromatic monomers decrease to 10.8%and 5.4%,respectively.Based on the results of Raman spectroscopy,it is speculated that the decrease in catalyst activity may be due to the formation of carbon deposits on the catalyst surface.Furthermore,it can be inferred that Ni/Al2O3 catalyst shows crucial role in the stabilization of active intermediates by analyzing the generation pathways of diols and aromatic monomers.关键词
玉米秸秆/加氢裂解/Ni/Al2O3催化剂/二元醇/芳香族单体Key words
corn stover/hydrocracking/Ni/Al2O3 catalyst/diols/aromatic monomers分类
化学化工引用本文复制引用
马泽暐,温哲..水滑石基Ni/Al2O3催化剂催化玉米秸秆加氢裂解制二元醇和芳香族单体性能研究[J].低碳化学与化工,2024,49(6):63-72,10.基金项目
国家自然科学基金(U20B6002) （U20B6002）
江苏省高等学校基础科学(自然科学)研究面上项目(23KJD530001). （自然科学）
