Hydroisomerization of Long Chain n-Paraffins over Pt/ZSM-22: Influence of Si/Al Ratio

Autor:	S.A. Kishore Kumar, Kamal K. Pant, Shivanand M. Pai, Mathew John, Bharat L. Newalkar, Snehalkumar Parmar
Rok vydání:	2015
Předmět:	General Chemical Engineering Pour point Analytical chemistry Energy Engineering and Power Technology chemistry.chemical_element Catalysis Crystallinity Fuel Technology chemistry Desorption Yield (chemistry) Organic chemistry Platinum Selectivity Space velocity
Zdroj:	Energy & Fuels. 29:1066-1075
ISSN:	1520-5029 0887-0624
DOI:	10.1021/ef502591q
Popis:	Hydroisomerization of n-hexadecane has been investigated over ZSM-22 framework by varying bulk molar Si/Al ratio in the range from 30 to 90 at constant platinum loading of about 0.45 wt %. Thus, ZSM-22 samples have been synthesized and characterized with respect to their crystallinity, textural parameters, and total acidity by means of X-ray diffraction, nitrogen adsorption desorption isotherm measurement at 77 K, and temperature-programmed desorption of ammonia technique, respectively. The effect of hydroisomerization reaction parameters, namely, temperature and weight hourly space velocity (WHSV), on n-hexadecane isomer selectivity and yield has been investigated. The optimal results over prepared catalysts demonstrated the best possible performance over ZSM-22 framework with bulk molar Si/Al ratio of 45, wherein the C16 product with isomer selectivity and yield (82.7 and 74.8%, respectively) and pour point of 252 K have been achieved at a conversion level of about 90% at 578 K. Based on the obtained re...
Databáze:	OpenAIRE
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