期刊论文

Preparation of NiO / EVM catalyst and its application in pyrolysis of biomass

中文

应用化工

1671-3206

2021

50

11

3055-3060

湖北省中央引导地方科技发展专项（2018ZYYD062）； 湖北省科技创新创业服务能力建设专项（2018BEC466）；

本校为第一机构

通过均匀沉淀法制备了以膨胀蛭石(EVM)为载体的NiO/ EVM催化剂。采用XRF、XRD、SEM、BET对催化剂进行了表征。研究煅烧温度、热解温度、保温时间、镍负载量、循环次数等因素对秸秆催化热解制备合成气的影响。结果表明, NiO/ EVM催化剂活性组分负载良好,分散均匀,比表面积为23.1 m~2 / g;煅烧温度400 ℃、热解温度800 ℃、镍负载量20%、保温时间20 min时,NiO/ EVM催化剂的催化效率最高;与不添加催化剂相比,H2的含量从21.20%增加到36.76%,CO的含量从27.13%增加到35.93%;连续再生循环使用6次后,合成气的含量仍相对提高36.5%。

Expanded vermiculite(EVM) was used as a carrier to prepare NiO/ EVM catalyst by homogeneous precipitation method. The different approaches including XRF,XRD,SEM,and BET were used to characterize the synthetic catalysts. The effects of calcination temperature,pyrolysis temperature,holding time,nickel loading and cycle times on the catalytic pyrolysis of straw to syngas were investigated. The results indicated that the active components of the NiO/ EVM catalyst was well loaded,uniformly dispersed, and with a specific surface area of 23.1 m~2 / g....