Phi zeolite synthesized by template-free method for selective catalytic reduction of NO

YANG Runnong; YU Lin; ZHAO Xiangyun; YANG Xiaobo; GAO Zihan; FU Guangying; JIANG Jiuxing; LIAN Weilin; LIU Wuyuan; FAN Qun

doi:10.11949/0438-1157.20200539

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Phi zeolite synthesized by template-free method for selective catalytic reduction of NO

Catalysis\, kinetics and reactors | 更新时间：2026-07-24

- Phi zeolite synthesized by template-free method for selective catalytic reduction of NO
- CIESC Journal Vol. 71, Issue 12, Pages: 5578-5588(2020)
- 作者机构：
  
  1.广东工业大学轻工化工学院，广州市清洁交通能源化学重点实验室，广东广州 510006
  2.广州市威格林环保科技有限公司，广东广州 511441
  3.中山大学化学学院，广东广州 510275
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200539
  CLC： TQ 032
- Received：09 May 2020，
  
  Revised：2020-07-08，
  
  Online First：17 December 2020，
  
  Published：05 December 2020
- 稿件说明：
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杨润农, 余林, 赵向云, 杨晓波, 高梓寒, 傅广赢, 姜久兴, 练纬琳, 刘武源, 范群. 无模板法合成的Phi分子筛在NO选择性催化还原中的应用[J]. 化工学报, 2020, 71(12): 5578-5588

YANG Runnong, YU Lin, ZHAO Xiangyun, YANG Xiaobo, GAO Zihan, FU Guangying, JIANG Jiuxing, LIAN Weilin, LIU Wuyuan, FAN Qun. Phi zeolite synthesized by template-free method for selective catalytic reduction of NO[J]. CIESC Journal, 2020, 71(12): 5578-5588
杨润农, 余林, 赵向云, 杨晓波, 高梓寒, 傅广赢, 姜久兴, 练纬琳, 刘武源, 范群. 无模板法合成的Phi分子筛在NO选择性催化还原中的应用[J]. 化工学报, 2020, 71(12): 5578-5588 DOI： 10.11949/0438-1157.20200539.

YANG Runnong, YU Lin, ZHAO Xiangyun, YANG Xiaobo, GAO Zihan, FU Guangying, JIANG Jiuxing, LIAN Weilin, LIU Wuyuan, FAN Qun. Phi zeolite synthesized by template-free method for selective catalytic reduction of NO[J]. CIESC Journal, 2020, 71(12): 5578-5588 DOI： 10.11949/0438-1157.20200539.

摘要

氮氧化物（NO

）是大气中的一种主要污染物。采用具有菱沸石结构（CHA）的铜基分子筛作为催化剂，通过选择性催化还原（SCR）技术可有效去除N

。采用一种经济环保的制备方法，在不使用模板剂的条件下水热合成一种具有结构缺陷的低硅铝比CHA型分子筛（Phi，Si/Al=4.7）。结果表明，经Cu离子交换制备的Cu/Phi具有最丰富的表面酸性与孤立态Cu

，表现出较好的低温活性、较宽的工作温度窗口以及良好的水热稳定性。Na或Mg的存在降低了Cu/Phi的表面酸性及孤立态Cu

的含量，水热老化后的Na，Cu/Phi和Mg，Cu/Phi均呈现出不同程度的骨架坍塌，相应导致了催化剂失活。

Abstract

Nitrogen oxide (NO

) is one of the major air pollutants. Using a copper-based zeolite with a chabazite structure (CHA) as a catalyst

the selective catalytic reduction (SCR) technology can effectively remove NO

. This work introduces a low silica CHA type zeolite with structural defects (zeolite Phi

with Si/Al of 4.7). The zeolite Phi is synthesized through a hydrothermal method without adding any template

which is low-cost and environment-friendly. The Cu-exchanged Phi is abundant of surface acidity and isolated Cu

showing a superior low-temperature activity

a wide work temperature window and a good hydrothermal stability. The presence of Na or Mg decreases the surface acidity and isolated Cu

. The hydrothermally aged Na

Cu/Phi and Mg

Cu/Phi present different levels of framework collapse

which correspondingly induces catalyst deactivation.

关键词

Keywords

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