Synthesis of FeAPO-5 molecular sieves with high iron contents via improved ionothermal method and their catalytic performances in phenol hydroxylation

2017 ◽  
Vol 25 (4) ◽  
pp. 1007-1016 ◽  
Author(s):  
Xinhong Zhao ◽  
Xiaoxiao Zhang ◽  
Zhixin Hao ◽  
Xiangping Gao ◽  
Zhong Liu
Keyword(s):  
Molecular Sieves ◽  
Phenol Hydroxylation ◽  
High Iron ◽  
Catalytic Performances

Thorough study of the effect of metal-incorporated SAPO-34 molecular sieves on catalytic performances in MTO process

2016 ◽  
Vol 291 ◽  
pp. 131-139 ◽  
Author(s):  
Mehdi Sedighi ◽  
Mostafa Ghasemi ◽  
Majid Sadeqzadeh ◽  
Mojtaba Hadi
Keyword(s):  
Molecular Sieves ◽  
Mto Process ◽  
Catalytic Performances

scholarly journals CATALYTIC PERFORMANCES OF Fe2O3/TS-1 CATALYST IN PHENOL HYDROXYLATION REACTION

2010 ◽  
Vol 10 (2) ◽  
pp. 149-155 ◽  
Author(s):  
Didik Prasetyoko ◽  
Cholifah Endah Royani ◽  
Hamzah Fansuri ◽  
Zainab Ramli ◽  
Hadi Nur
Keyword(s):  
Reaction Rate ◽  
Formation Rate ◽  
Nitrogen Adsorption ◽  
Industrial Applications ◽  
Phenol Hydroxylation ◽  
Impregnation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydroxylation Reaction ◽  
Catalytic Performances

Hydroxylation reaction of phenol into diphenol, such as hydroquinone and catechol, has a great role in many industrial applications. Phenol hydroxylation reaction can be carried out using Titanium Silicalite-1 (TS-1) as catalyst and H2O2 as an oxidant. TS-1 catalyst shows high activity and selectivity for phenol hydroxylation reaction. However, its hydrophobic sites lead to slow H2O2 adsorption toward the active site of TS-1. Consequently, the reaction rate of phenol hydroxylation reaction is tends to be low. Addition of metal oxide Fe2O3 enhanced hydrophilicity of TS-1 catalyst. Liquid phase catalytic phenol hydroxylation using hydrogen peroxide as oxidant was carried out over iron (III) oxide-modified TS-1 catalyst (Fe2O3/TS-1), that were prepared by impregnation method using iron (III) nitrate as precursor and characterized by X-ray diffraction, infrared spectroscopy, nitrogen adsorption, pyridine adsorption, and hydrophilicity techniques. Catalysts 1Fe2O3/TS-1 showed maximum catalytic activity of hydroquinone product. In this research, the increase of hydroquinone formation rate is due to the higher hydrophilicity of Fe2O3/TS-1 catalysts compare to the parent catalyst, TS-1.   Keywords: Fe2O3/TS-1, hydrophilic site, phenol hydroxylation

Intergrowth Silicoaluminophosphate Molecular Sieves Synthesized and Their Catalytic Performances for Methanol to Olefins Reaction

2018 ◽  
Vol 57 (31) ◽  
pp. 10398-10402 ◽  
Author(s):  
Lei Guo ◽  
Weiping Zhu ◽  
Ping Miao ◽  
Fei Li ◽  
Zhihui Guo ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Catalytic Performances

Metal substituted aluminophosphate molecular sieves as phenol hydroxylation catalysts

1996 ◽  
Vol 143 (1) ◽  
pp. 101-110 ◽  
Author(s):  
Pei-Shing E. Dai ◽  
Randall H. Petty ◽  
Conrad W. Ingram ◽  
R. Szostak
Keyword(s):  
Molecular Sieves ◽  
Phenol Hydroxylation ◽  
Aluminophosphate Molecular Sieves
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