文献类型：期刊文献

英文题名：Catalytic hydrogenation and one step hydrogenation-esterification to remove acetic acid for bio-oil upgrading: model reaction study

作者：Zhou, Minghao[1] Liu, Peng[1] Wang, Kui[1] Xu, Junming[2] Jiang, Jianchun[1]

第一作者：周铭昊

通信作者：Jiang, JC[1];Xu, JM[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Biomass Energy & Mat Lab, Nanjing 210042, Jiangsu, Peoples R China;[2]CAF, Inst New Technol Forestry, Beijing 100091, Peoples R China

年份：2016

卷号：6

期号：21

起止页码：7783-7792

外文期刊名：CATALYSIS SCIENCE & TECHNOLOGY

收录：;EI(收录号：20164502979246);Scopus(收录号：2-s2.0-84993968447);WOS:【SCI-EXPANDED(收录号:WOS:000386424200015)】；

基金：Authors are grateful for the financial support for this work from Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM-S-201607), National Natural Science Foundation of China (31530010), and the Natural Science Foundation of Jiangsu Province (Grant No. BK20151068).

语种：英文

外文关键词：Acetaldehyde - Acetic acid - Carbon nanotubes - Catalyst activity - Esters - Hydrogen - Nanocatalysts - Petroleum transportation - pH - Sulfur compounds

摘要：Bio-oil has a complex composition including acids and aldehydes, which lead to undesirable properties, such as high corrosiveness and instability. Upgrading was needed to improve bio-oil quality for its further application as transportation fuels. Hydrogenation and one step hydrogenation-esterification (OHE) were effective methods to convert acids and bio-oil to combustive alcohols and esters. Herein, various CNT-supported (carbon nanotube) non-sulfide catalysts were prepared and catalytic activity was investigated through hydrogenation of acetic acid and OHE of acetic acid and acetaldehyde. Mo-promoted NiMo/CNT catalysts exhibited better catalytic activity in both hydrogenation and OHE reaction for removing acetic acid. The optimal acetic acid conversion rate was up to 17%, with a selectivity of 85% toward ethanol during hydrogenation. OHE showed better efficiency for the conversion of acetic acid compared with hydrogenation. The effect of process parameters on esterification of acetic acid and acetaldehyde together with the selectivity of ethyl acetate were investigated in detail. It was found that addition of extra hydrogen during the OHE reaction was beneficial for improving both acetaldehyde conversion and ethyl acetate selectivity. When extra hydrogen was added twice, the acetaldehyde conversion rose from 66.0% to 81.4%, and the ethyl acetate selectivity improved from 21.8% to 36.8%.