Journal Article

A ZSM-5-based Catalyst for Efficient Production of Light Olefins and Aromatics from Fluidized-bed Naphtha Catalytic Cracking

Xie, Peng, Liu, Zhongmin, Meng, Shuanghe, He, Yanli, Chang, Fuxiang, Wan, Jinlong, Wei, Yingxu, Qi, Yue, Li, Mingzhi, Li, Bing

2008

Overview

A ZSM-5-based catalyst was prepared by spray-dry method for fluidized-bed naphtha catalytic cracking. Multi-techniques, such as X-ray diffraction, scanning electron microscope, 27 Al MAS NMR, and NH 3 –TPD, were employed for the investigation of ZSM-5 framework stability, framework dealumination, and catalyst acidity variation in hydrothermal treatment. Catalytic performances of fluidized-bed naphtha catalytic cracking at 630–680 °C indicated that light olefins and other value-added products could be more efficiently produced compared with the commercial process of thermal steam cracking. Long-term catalytic evaluation implied that naphtha catalytic cracking over the catalyst prepared with spray-dry method and hydrothermal treatment can be carried out at a variable reaction condition with a relatively high and stable light olefins yield.

• Publisher: Springer US,Springer,Springer Nature B.V
• Subject: Alkenes / Ammonia / Catalysis / Catalysts / Catalytic cracking / Chemistry / Chemistry and Materials Science / Exact sciences and technology / Fluidized beds / General and physical chemistry / Hydrothermal treatment / Industrial Chemistry/Chemical Engineering / Ion-exchange / Naphtha / NMR spectroscopy / Organometallic Chemistry / Physical Chemistry / Supply & demand / Surface physical chemistry / Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry / X-ray diffraction / Zeolites: preparations and properties