林产化学与工业2018，Vol.38Issue(3)：48-54,7.DOI:10.3969/j.issn.0253-2417.2018.03.006
Cu掺杂多孔金属氧化物催化竹材的定向液化
Directional Liquefaction of Bamboo Catalyzed by Cu Doped Porous Metal Oxide
摘要
Abstract
Cu doped porous metal oxide ( PMO) catalysts were prepared using hydrotalcite-like compound as precursors. The synthesized catalysts were characterized by ICP, BET and XPS. The ICP analysis showed that metal loaded on the catalysis equated with the experiment design, which indicated that no obvious mass loss of metal ion during the formation and calcinations of hydrotalcite-like compound. BET analysis indicated a higher surface area in the doped PMO than the undoped. Appearance of PMO catalysts changed from green to red after the reaction. XPS studies showed that the color change was accompanied with the reduction of Cu (Ⅱ) to Cu(Ⅰ)/Cu( 0) . The effects of reaction parameters on the liquefaction and products composition of bamboo were investigated in supercritical methanol medium. The results showed that under the conditions of 10% Cu0.2Mg0.8Al-LDO, reaction temperature of 280℃, and reaction time of 8 h, the liquefaction rate was 95.7%, the contents of alcohols and ketones in the liquefaction product were 55. 7%, and almost no acid was found, indicating that the bamboo was converted to the liquid product mainly composed of small alcohols and ketones after depolymerization and hydrogenation. The amounts of products with low oxygen content such as ketones, alcohols and hydrocarbons increased with the increase of Cu doping levels and more catalysts dosage, while the amount of ester decreased significantly. The supercritical temperature of methanol was a key factor for the composition and distribution of the products. Generally, longer time resulted in higher contents of alcohols, ketones and hydrocarbons. These results supported that Cu doped PMO catalyst was an effective catalyst for both hydrogenolysis and hydrogenation of bamboo by in situ produced H2 from methanol.关键词
解聚/木质纤维生物质/精细化学品/超临界甲醇/加氢Key words
depolymerization/lignocellulosic biomass/fine chemicals/supercritical methanol/hydrogenation分类
化学化工引用本文复制引用
叶结旺,蒋剑春,马中青,章卫钢,卢凤珠..Cu掺杂多孔金属氧化物催化竹材的定向液化[J].林产化学与工业,2018,38(3):48-54,7.基金项目
国家自然科学基金资助项目(51706207) （51706207）
中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2014ZD003) （CAFYBB2014ZD003）
浙江省自然科学基金资助项目(LY17C160007) （LY17C160007）
