Surface structure and activity of iron molybdate catalyst for methanol oxidation to formaldehyde

ZHANG Shuai; ZHANG Yike; HU Rlckt; ZHEN Bin; HAN Minghan

doi:10.11949/j.issn.0438-1157.20160132

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Surface structure and activity of iron molybdate catalyst for methanol oxidation to formaldehyde

更新时间：2025-12-10

- Surface structure and activity of iron molybdate catalyst for methanol oxidation to formaldehyde
- CIESC Journal Issue 9, Pages: 3678-3683(2016)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160132
  CLC： 643
- Online First：05 September 2016，
  
  Published：05 September 2016
- 稿件说明：
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ZHANG Shuai, ZHANG Yike, HU Rlckt, et al. Surface structure and activity of iron molybdate catalyst for methanol oxidation to formaldehyde[J]. CIESC Journal, 2016, (9): 3678-3683.
DOI：

ZHANG Shuai, ZHANG Yike, HU Rlckt, et al. Surface structure and activity of iron molybdate catalyst for methanol oxidation to formaldehyde[J]. CIESC Journal, 2016, (9): 3678-3683. DOI： 10.11949/j.issn.0438-1157.20160132.

摘要

利用共沉淀法在不同搅拌速度下制备了相同Mo/Fe原子比的甲醇氧化制甲醛催化剂，采用SEM、XRD和拉曼光谱等对催化剂进行表征，在固定床微反上评价催化剂活性和选择性。结果表明，搅拌速度增大，催化剂比表面积增大，催化活性增强，甲醛收率由600 r·min-1时的73.8%增加到10000 r·min-1时的95.7%（280℃）。此外，催化剂由片状的MoO3和颗粒状的Fe2（MoO4）3两部分组成，游离的片状MoO3无明显催化活性，只有与Fe2（MoO4）3结合时才具有催化活性。

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.

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