Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers

Guozhu Liu; Hairui Liang; Yajie Tian; Bofeng Zhang; Li Wang

doi:10.1016/j.cjche.2020.05.013

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Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers
- Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers
- 中国化学工程学报（英文版） 2020年28卷第10期页码：2577-2586
- Affiliations：
  
  1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. College of Chemistry and Chemical Engineering, Henan University,Kaifeng,China,475001
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.05.013
  中图分类号：
- 纸质出版：2020
- Accepted：
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Guozhu Liu, Hairui Liang, Yajie Tian, 等. Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers[J]. 中国化学工程学报（英文版）, 2020,28(10):2577-2586.

Guozhu Liu, Hairui Liang, Yajie Tian, Bofeng Zhang, Li Wang. Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2577-2586.
Guozhu Liu, Hairui Liang, Yajie Tian, 等. Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers[J]. 中国化学工程学报（英文版）, 2020,28(10):2577-2586. DOI： 10.1016/j.cjche.2020.05.013.

Guozhu Liu, Hairui Liang, Yajie Tian, Bofeng Zhang, Li Wang. Direct synthesis of hydrogen peroxide over Pd nanoparticles embedded between HZSM-5 nanosheets layers[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2577-2586. DOI： 10.1016/j.cjche.2020.05.013.

摘要

Abstract

Direct synthesis of hydrogen peroxide (DSHP) was studied over Pd loaded on HZSM-5 nanosheets (Pd/ZN). Pd nanoparticles with average size of

. 4.3 nm were introduced into the adjacent nanosheet layers (thickness of ca. 2.9 nm) by impregnation method. Pd/ZN with theoretical Si/Al molar ratio of 25 showed the highest selectivity for H

among the prepared catalysts

together with highest formation rate of H

(38.0 mmol·(g cat)

-1

·h

-1

)

1.9 times than that of Pd supported on conventional HZSM-5 zeolite (Pd/CZ-50). Better catalytic performance of nanosheet catalysts was attributed to the promoted Pd dispersion which promoted H

dissociation

more Brønsted acid sites and stronger metal-support interaction which inhibited the dissociation of O-O bond in H

. The embedded structure sufficiently protected the Pd nanoparticles by space confinement which restrained the Pd leaching

leading to a better catalytic stability with 90% activity retained after 3 cycles

which was almost 3 times than that of Pd/CZ-50 (30.4% activity retained).

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