Effects of sodium-modified Pt/AlOOH catalyst on activity of formaldehyde oxidation

ZHAO Guobing; ZHANG Qi; CHENG Fei; WANG Tianyu

doi:10.11949/j.issn.0438-1157.20180531

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Effects of sodium-modified Pt/AlOOH catalyst on activity of formaldehyde oxidation

更新时间：2025-12-10

- Effects of sodium-modified Pt/AlOOH catalyst on activity of formaldehyde oxidation
- CIESC Journal Issue 11, Pages: 4722-4727(2018)
- 作者机构：
  
  化学工程联合国家重点实验室, 华东理工大学,上海,200237
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180531
  CLC： Q032O643
- Online First：05 November 2018，
  
  Published：05 November 2018
- 稿件说明：
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ZHAO Guobing, ZHANG Qi, CHENG Fei, et al. Effects of sodium-modified Pt/AlOOH catalyst on activity of formaldehyde oxidation[J]. CIESC Journal, 2018, (11): 4722-4727.
DOI：

ZHAO Guobing, ZHANG Qi, CHENG Fei, et al. Effects of sodium-modified Pt/AlOOH catalyst on activity of formaldehyde oxidation[J]. CIESC Journal, 2018, (11): 4722-4727. DOI： 10.11949/j.issn.0438-1157.20180531.

摘要

具有晶面取向的阳极氧化AlOOH因其低温甲醛催化性能而被用于催化氧化甲醛体系。为丰富AlOOH表面羟基含量，采用Na2CO3为Na前体浸渍法改性载体，制备不同Na含量（0.13%、0.19%、0.30%、0.41%，质量分数）的Pt/Nax/AlOOH催化剂。通过BET、FTIR、XPS、HRTEM等表征分析，发现加入Na后，Na/AlOOH的表面羟基更加丰富，Pt/Nax/AlOOH催化剂的比表面积增大，拥有更小的Pt颗粒尺寸，表面Pt颗粒分散度提高，Pt0元素价态含量增加。当Na含量为0.41%时，催化剂Pt/0.41Na/AlOOH的Pt分散度高达56%。实验结果证明，Pt/0.41Na/AlOOH展现出最优的HCHO催化活性，60℃时HCHO转化率达100%。

Abstract

Structured anodic AlOOH with dominant facets has catalytic characteristics of formaldehyde at low temperature

which were developed and investigated in terms of the catalytic performance in formaldehyde oxidation. To enrich the surface hydroxyl content of AlOOH

Pt/Nax/AlOOH catalysts with different Na contents (0.13%

0.19%

0.30%

0.41%) were prepared by Na2CO3 as Na precursor impregnation method. The results given by BET

FTIR and XPS indicate that the soidum-modified Na/AlOOH has much more surface hydroxyls groups

the specific surface area of Pt/Nax/AlOOH and the catalysts have higher Pt dispersion and smaller Pt NPs. When Na content was 0.41%

the Pt dispersion of Pt/0.41Na/AlOOH reached to 56%. The results testified that HCHO was completely diminished at 60℃ over Pt/0.41Na/AlOOH

which has the highest catalytic activity of formaldehyde.

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