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化学与材料
物理化学进展
Vol. 4 No. 2 (May 2015)
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氨水蒸气处理Fe-ZSM-5分子筛催化N
2
O氧化苯制苯酚
Direct Oxidation of Benzene to Phenol by N
2
O over Fe-ZSM-5 Zeolites Obtained via Ammonia-Steaming Treatment
DOI:
10.12677/JAPC.2015.42006
,
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,
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被引量
下载: 2,388
浏览: 9,622
作者:
李露露
*
,
孟庆伦
,
文俊俊
,
肖强
:浙江师范大学,物理化学研究所,先进催化材料教育部重点实验室,浙江 金华
关键词:
氨水蒸气处理
;
Fe-ZSM-5
;
苯制苯酚
;
多级孔结构
;
Ammonia-Steaming Treatment
;
Fe-ZSM-5
;
Oxidation of Benzene to Phenol
;
Hierarchical
摘要:
在硅烷偶联剂(3-环氧乙基甲氧基丙基)三甲氧基硅烷(GPTMS)作用下合成了多级孔结构Fe-ZSM-5,采用氨水蒸气对Fe-ZSM-5分子筛进行后处理。利用XRD、SEM、N2吸脱附、UV-vis及NH
3
-TPD等方法对处理的Fe-ZSM-5进行了表征,并考察了处理后的沸石分子筛催化N
2
O氧化苯制苯酚的催化性能。结果表明,氨水蒸气相较于水蒸气处理的Fe-ZSM-5分子筛骨架结构和孔结构变化不大,但保留了更多的中强酸酸中心和非骨架活性铁物种,在苯制苯酚反应中表现出更好的催化活性。
Abstract:
Hierarchical Fe-ZSM-5 was synthesized with the aid of 3-glycidoxypropyltrimethoxysilane (GPTMS) and then was modified by the ammonia-steaming post treatment. Various techniques, such as XRD, SEM, N
2
adsorption-desorption, UV-vis and NH3-TPD were used to characterize the as-obtained and modified hierarchical Fe-ZSM-5. The direct oxidation of benzene to phenol using N
2
O as the oxidizing agent was conducted on the ammonia-steaming treated Fe-ZSM-5. The results showed that compared to the steaming treated Fe-ZSM-5 catalysts, ammonia-steaming treated hierarchical Fe-ZSM-5 catalysts preserved more mediate strong acid sites and ex-framework iron active species, thus exhibited a higher catalytic activity in the catalytic oxidation of benzene to phenol with N
2
O, while the frame structure and pore structure of Fe-ZSM-5 was almost unchange.
文章引用:
李露露, 孟庆伦, 文俊俊, 肖强. 氨水蒸气处理Fe-ZSM-5分子筛催化N
2
O氧化苯制苯酚[J]. 物理化学进展, 2015, 4(2): 38-44.
http://dx.doi.org/10.12677/JAPC.2015.42006
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