نتایج جستجو برای: hzsm 5

تعداد نتایج: 1215774  

Journal: :Catalysts 2022

Naphthenic acids are naturally occurring carboxylic in crude oil with cyclic or aromatic rings their structure. These responsible for the acidity of oil, leading to corrosion problems refinery equipment and deactivation catalysts while creating a continuous need maintenance. Therefore, removing naphthenic has become an important requirement refining acidic oil. In this paper, experiments conduc...

Journal: :Journal of Porous Materials 2022

This work shows how propane was catalytically converted to aromatic compounds over Zn-Ni/HZSM-5 investigate the synergistic role of nickel as a zinc stabilizer and promoter in aromatization. Co-impregnation method employed for Zn-Ni/ZSM-5 synthesis fixed 2 wt% 1, 3 nickel. Modified catalysts’ were fully characterized. Catalysts crystallinity, structure microporosity retained from analysis resul...

2005
Mizuki TADA Rajaram BAL Yohei Uemura Yasuhiro IWASAWA

Introduction Phenol is an important chemical in industry but has been produced from benzene by the three-steps of cumene process. Direct phenol synthesis from benzene is one of the important subjects. However, no selective catalyst with good performance in an economically and environmentally favourable benzene-O2 system has been discovered to date. We have found Re/HZSM-5 promoted the direct ph...

Journal: :Chemical Engineering & Technology 2023

Abstract The present work deals with the chemical recycling of waste polypropylene via thermocatalytic pyrolysis over HZSM‐5 zeolite catalysts. main aim was to systematically investigate influence reactor configuration, acidity, wastes, obtained from different sources, as well catalyst regeneration on product distribution. It demonstrated that configuration and acid site density catalysts stron...

Journal: :Chemical Engineering Journal 2022

Carbon dioxide can be utilized as a feedstock to produce chemicals and renewable fuels sustainably. CO2 hydrogenation hydrocarbons through methanol mediated pathway requires more detailed study, examining interactions between reaction processes leading different product selectivities. In this particular work, we propose kinetic model for the direct hydrocarbon products over an In2O3/HZSM-5 bifu...

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