Formic acid assisted synthesis of Cu-ZnO-Al2O3 catalyst and its performance in CO2 hydrogenation to methanol

被引：3

作者：

Jiang X.-Y. ^{[1
]}

Yang W.-B. ^{[1
]}

Song H. ^{[1
]}

Ma Q.-X. ^{[1
]}

Gao X.-H. ^{[1
]}

Li P. ^{[1
]}

Zhao T.-S. ^{[1
]}

机构：

[1] State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2023年 / 51卷 / 01期

基金：

中国国家自然科学基金;

关键词：

CO[!sub]2[!/sub] hydrogenation; Cu-ZnO-Al[!sub]2[!/sub]O[!sub]3[!/sub; formic acid treatment; methanol;

D O I：

10.1016/S1872-5813(22)60041-0

中图分类号：

学科分类号：

摘要：

The Cu/Zn/Al precursor by coprecipitation was treated with formic acid and then calcined in N2 to obtain Cu-ZnO-Al2O3 catalyst (CZA) for the CO2 hydrogenation to methanol. XRD, BET, TG-DSC, SEM, H2-TPR, N2O titration, XPS-AES and CO2-TPD characterization techniques were used to analyze the phase composition, structural properties of the catalyst, the Cu specific surface area, the dispersion and valence of the Cu species. The results showed that the formic acid treatment tuned the ratio of Cu+ and Cu0, increased the number of medium-strong base sites in the catalyst, and raised the selectivity of methanol. Under reaction conditions of W/F(H2/CO2=70/23)=10 g∙h/mol, t =200 ℃ and p =3 MPa, using Cu-ZnO-Al2O3 treated under HCOOH/Cu (molar ratio) =0.8, the CO2 conversion and the methanol selectivity were 6.7% and 76.3%, respectively. © 2023 Science Press. All rights reserved.

引用

页码：120 / 128

页数：8

共 45 条

[21] DONG X S, LI F, ZHAO N, XIAO F K, WANG J W, TAN Y S., CO2 hydrogenation to methanol over Cu/ZnO/ZrO2 catalysts prepared by precipitation-reduction method[J], Appl Catal B: Environ, 191, (2016)
[22] SHI L, SHEN W Z, YANG G H, FAN X J, FAN X J, JIN Y Z, ZENG C Y, MATSUDA K J, TSUBAKI N., Formic acid directly assisted solid-state synthesis of metallic catalysts without further reduction: as-prepared Cu/ZnO catalysts for low-temperature methanol synthesis[J], J Catal, 302, (2013)
[23] WITOON T, PERMSIRIVANICH T, CHAREONPANICH M., Chitosan-assisted combustion synthesis of CuO-ZnO nanocomposites: effect of pH and chitosan concentration[J], Ceram Int, 39, 3, pp. 3371-3375, (2013)
[24] LI L, MAO D S, YU J, GUO X M., Highly selective hydrogenation of CO2 to methanol over CuO-ZnO-ZrO2 catalysts prepared by a surfactant-assisted co-precipitation method[J], J Power Sources, 279, (2015)
[25] LIU Yan, GAO Zhi-hua, HAO Shu-hong, LI Shuai-shuai, HUANG Wei, Effect of pH value on the catalytic performance of Cu-ZnO-Al2O3-LDHs catalysts in the synthesis of C2+ alcohol[J], Acta Pet Sin (Pet Proc Sect), 34, 4, pp. 716-722, (2018)
[26] GAO Peng, LI Feng, ZHAO Ning, WANG Hui, WEI Wei, SUN Yu-han, Preparation of Cu-ZnO-Al2O3/(Zr)/(Y) catalyst form hydrotalcite-like precursors and their catalytic performance for the hydrogenation of CObb to methanol[J], Acta Phys-Chim Sin, 30, 6, (2014)
[27] XIAO Shuo, GAO Peng, YANG Hai-yan, XIA Lin, ZHANG Jian-ming, CHEN Zhi-wen, WANG Hui, Preparation of layered Cu-ZnO-Al2O3 catalyst and its catalytic performance for CO2 hydrogenation to methanol[J], J Shanghai Univ (Nat Sci Ed), 22, 2, (2016)
[28] SHI L, SUN D, WANG Y X, TAN Y S, LI J, YAN S R, FANG R G, TSUBAKI N., Formic acid assisted synthesis of highly efficient Cu/ZnO catalysts effect of HCOOH/Cu molar ratios[J], Catal Sci Technol, 6, pp. 4777-4785, (2016)
[29] LU P, CHIZEMA L G, HONDO E, TONG M L, XING C, LU C X, MEI Y F, YANG R Q., CO2 hydrogenation to methanol via In-situ reduced Cu/ZnO catalyst prepared by formic acid assisted grinding[J], Chem Select, 4, 19, pp. 5667-5677, (2019)
[30] CHEN Mao-zhong, WANG Lan-yi, YU Xue-hua, ZHAO Zhen, Preparation of MnO2 under different hydrothermal conditions and its catalytic performance for soot combustion[J], Ind Catal, 26, 10, (2018)

← 1 2 3 4 5 →