Catalytic performance of cabon fiber felt supported tungsten carbide and tungsten carbonitride for hydrazine decomposition

SUN Jun; HUANG Yanqiang; ZHANG Tao

doi:10.11949/j.issn.0438-1157.20150660

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Catalytic performance of cabon fiber felt supported tungsten carbide and tungsten carbonitride for hydrazine decomposition

更新时间：2025-12-10

- Catalytic performance of cabon fiber felt supported tungsten carbide and tungsten carbonitride for hydrazine decomposition
- CIESC Journal Issue 8, Pages: 2976-2981(2015)
- 作者机构：
  
  中国科学院大连化学物理研究所, 催化基础国家重点实验室,辽宁,大连,116023
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150660
  CLC： 643
- Online First：05 August 2015，
  
  Published：05 August 2015
- 稿件说明：
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SUN Jun, HUANG Yanqiang, ZHANG Tao. Catalytic performance of cabon fiber felt supported tungsten carbide and tungsten carbonitride for hydrazine decomposition[J]. CIESC Journal, 2015, (8): 2976-2981.
DOI：

SUN Jun, HUANG Yanqiang, ZHANG Tao. Catalytic performance of cabon fiber felt supported tungsten carbide and tungsten carbonitride for hydrazine decomposition[J]. CIESC Journal, 2015, (8): 2976-2981. DOI： 10.11949/j.issn.0438-1157.20150660.

摘要

以纳米碳纤维/碳毡(CFF)为载体

分别采用碳热氢气还原法和碳热氨气还原法制备了负载型碳化钨、碳氮化钨整体催化剂

XRD结果表明催化剂的活性相分别为W2C和WCxNy

TEM表征发现其粒子尺寸分别为2～40 nm和2～20 nm。采用1 N肼分解推力器评价了上述催化剂的反应性能

W2C/CFF和WCxNy/CFF表现出了相比于Ir/CFF更好的肼分解综合性能:除了初活性略低以外

启动加速性、稳态燃压以及比活性均高于贵金属Ir催化剂。此外

W2C/CFF和WCxNy/CFF催化剂的稳定性明显优于Ir/CFF

这主要是由于CFF载体在贵金属Ir的作用下发生了更显著的甲烷化反应。

Abstract

Cabon fiber felt (CFF) supported tungsten carbide and tungsten carbonitride were prepared using a carbonthermal hydrogen reduction process and a carbonthermal ammonia reduction process

respectively. The XRD and TEM results indicated the formation of W2C and WCxNy phase on the above samples with the corresponding particle size range of 2—40 nm and 2—20 nm

respectively. It was found that both catalysts exhibited desired catalytic performances in a one Newton hydrazine microthruster. The properties

including the ignition delay

the steady chamber pressure as well as the steady catalyst bed temperature over the W2C/CFF and WCxNy/CFF catalysts

were better than those over the Ir/CFF. Moreover

due to the negligible activity in methanation reaction

the tungsten-based catalysts exhibited a higher stability than the Ir/CFF catalysts.

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