摘要
本文采用固定床微反装置考察共沉淀法制备的镍基催化剂天然气和CO2转化制备合成气的催化活性。并采用X-射线衍射（XRD）和催化剂程序升温还原（TPR）等技术表征催化剂。结果表明：共沉淀法制备的镍基催化剂具有较高的催化活性，最佳的沉淀条件是沉淀温度为室温、快速加料、搅拌0．5～1h、沉淀沉降1h、沉淀过滤、烘干、500℃焙烧，这样制备的催化剂活性较高。通过对焙烧温度的研究发现，高温焙烧能够使氧化镍从催化剂体相向表相移动。
The catalytic activity of nickel catalyst which was prepared by coprecipitation method in fixed bed reactor on synthesis gas synthesizing by natural gas and CO2 was investigated. The catalyst was characterized by XRD and TPR. The results showed that the nickel catalyst showed good catalytic activity, and the best deposition conditions were room temperature, rapid feeding, stirring 0. 5 - 1 h, depositing 1h, deposit filtering, drying and 500℃ roasting. The study on roasting temperature showed that high temperature roasting moves catalyst from inner to exterior.
出处
《化学工程师》
CAS
2008年第2期15-17,共3页
Chemical Engineer
关键词
共沉淀法
天然气
合成气
镍基催化剂
coprecipitation method
natural gas
synthesis gas
nickel catalyst
