铜草基载铜活性炭的制备及其在催化转移氢化中的应用  

Preparation of Cu-loaded activated carbon from Elsholtzia splendens and its application in catalytic transfer hydrogenation

作　　者：徐玲[1] 钟洋 徐海峰[1] 陈旭杰 李彦辰 蒋雨希 吕秀阳[1] XU Ling;ZHONG Yang;XU Hai-feng;CHEN Xu-jie;LI Yan-chen;JIANG Yu-xi;LYU Xiu-yang(Key Laboratory of Biomass Chemical Engineering of Ministry of Education,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学生物质化工教育部重点实验室,浙江大学化学工程与生物工程学院,浙江杭州310027

出　　处：《高校化学工程学报》2020年第4期974-979,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(21676243)。

摘　　要：铜草是一种用于修复铜污染土壤的重金属耐性/富集植物,目前尚未得到有效利用。研究提出了一种以铜草为起始原料,经CO2活化制备载铜活性炭的新思路。在考察活化温度和活化时间对活性炭性能的影响基础上,得到了制备活性炭较佳工艺条件:炭化温度为500℃、炭化时间为2 h、活化温度为600℃、活化时间为3 h,所得铜草基载铜活性炭的BET比表面积达433.0 m^2×g^-1,铜颗粒分散较均匀,对生物质基C═C/C═O键的催化转移氢化具有较好的催化活性。Elsholtzia splendens is a heavy metal accumulatable plant to remediate Cu contaminated land,which has not been used effectively yet.A new idea of preparing Cu-loaded activated carbon by CO2 activation was proposed using Elsholtzia splendens as a starting material.Effects of activation temperature and activation time were investigated,and the optimized conditions were obtained:500℃of carbonization temperature,2 h of carbonization time,600℃of activation temperature and 3 h of activation time.BET surface area of Cu-loaded activated carbon was 433.0 m^2×g^-1,and Cu particles were uniformly dispersed.Cu-loaded activated carbon had good catalytic activity for catalytic transfer hydrogenation of biomass-based C═C/C═O bonds.The study provides a new approach for the utilization of heavy metal accumulated plants.

关 键 词：铜草 载铜活性炭 催化转移氢化 生物质 

分 类 号：TQ032.4[化学工程]