化工学报2016，Vol.67Issue(9)：3678-3683,6.DOI:10.11949/j.issn.0438-1157.20160132
甲醇氧化制甲醛铁钼催化剂表面结构与活性
Surface structure and activity of iron molybdate catalyst for methanol oxidation to formaldehyde
张帅 1张一科 1呼日勒朝克图 1甄彬 1韩明汉2
作者信息
- 1. 清华大学化学工程系，北京 100084
- 2. 天津理工大学化学化工学院，天津 300384
- 折叠
摘要
Abstract
Iron-molybdenum catalysts with the same atomic ratio of Mo/Fe for methanol oxidation to formaldehyde were prepared by co-precipitation method under varied rates of stirring. The catalysts were characterized by SEM, XRD and Raman spectrum and the catalytic activity and selectivity evaluated in a fixed-bed reactor.It showed that with an increase of stirring speed, the specific surface area of the catalysts increases and the catalytic activity enhances. The yield of formaldehyde increases from 73.8% at 600 r·min−1 to 95.7% (T=280℃) at 10000 r·min−1. The catalyst consists of plate-like MoO3 and amorphous sponge-like Fe2(MoO4)3. In addition, the catalyst consists of sheet-shaped MoO3 and particle-shaped Fe2(MoO4)3, of which the former had barely no activity, and only the combination of the former and the latter (Fe2(MoO4)3) does show the catalytic activity.关键词
甲醇氧化/甲醛/铁钼催化剂/沉淀/制备/表面结构/活性Key words
methanol oxidation/formaldehyde/iron molydbate/precipitation/preparation/surface structure/activity分类
化学化工引用本文复制引用
张帅,张一科,呼日勒朝克图,甄彬,韩明汉..甲醇氧化制甲醛铁钼催化剂表面结构与活性[J].化工学报,2016,67(9):3678-3683,6.
