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Title: Hydroisomerization and hydrocracking of n-heptane and n-hexadecane on solid superacids

Abstract

Formation of highly branched long-chain paraffins and highly isomerized shorter chain paraffins from conversion of heavier n-paraffinic fractions is of interest for the production of high-octane gasoline, jet fuel, and lubricants. In this study, n-hexadecane was hydroisomerized and hydrocracked on a platinum-doped solid superacid, Pt/ZrO{sub 2}/SO{sub 4}{sup 2{minus}}, in a batch horizontal shaking microreactor system at rather mild conditions: 130-170{degree}C, 300 psig initial hydrogen pressure, and 15-75 min reaction time. A moderate conversion level, over 65 wt%, was achieved at temperatures above 140{degree}C, which is significantly lower than Pt-doped acid catalysts in similar studies. Up to 70% of the hydroisomerized products are multibranched isohexadecanes. For the hydrocracked products, a very high selectivity, more than 90%, to isoparaffins resulted. Less than 1 wt% of platinum on the surface was very effective in preventing catalyst deactivation under low hydrogen pressure.

Authors:
; ;  [1]
  1. Univ. of Pittsburgh, PA (USA)
OSTI Identifier:
6218968
Resource Type:
Journal Article
Journal Name:
Energy and Fuels; (USA)
Additional Journal Information:
Journal Volume: 4:4; Journal ID: ISSN 0887-0624
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; HEPTANE; HYDROCRACKING; ISOMERIZATION; HEXADECANE; CATALYSTS; DATA ANALYSIS; EXPERIMENTAL DATA; MEASURING INSTRUMENTS; MEASURING METHODS; PLATINUM; ZIRCONIUM OXIDES; ALKANES; CHALCOGENIDES; CHEMICAL REACTIONS; CRACKING; DATA; DECOMPOSITION; ELEMENTS; HYDROCARBONS; INFORMATION; METALS; NUMERICAL DATA; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; PYROLYSIS; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; ZIRCONIUM COMPOUNDS; 020500* - Petroleum- Products & By-Products

Citation Formats

Wen, M Y, Wender, I, and Tierney, J W. Hydroisomerization and hydrocracking of n-heptane and n-hexadecane on solid superacids. United States: N. p., Web. doi:10.1021/ef00022a007.
Wen, M Y, Wender, I, & Tierney, J W. Hydroisomerization and hydrocracking of n-heptane and n-hexadecane on solid superacids. United States. https://doi.org/10.1021/ef00022a007
Wen, M Y, Wender, I, and Tierney, J W. . "Hydroisomerization and hydrocracking of n-heptane and n-hexadecane on solid superacids". United States. https://doi.org/10.1021/ef00022a007.
@article{osti_6218968,
title = {Hydroisomerization and hydrocracking of n-heptane and n-hexadecane on solid superacids},
author = {Wen, M Y and Wender, I and Tierney, J W},
abstractNote = {Formation of highly branched long-chain paraffins and highly isomerized shorter chain paraffins from conversion of heavier n-paraffinic fractions is of interest for the production of high-octane gasoline, jet fuel, and lubricants. In this study, n-hexadecane was hydroisomerized and hydrocracked on a platinum-doped solid superacid, Pt/ZrO{sub 2}/SO{sub 4}{sup 2{minus}}, in a batch horizontal shaking microreactor system at rather mild conditions: 130-170{degree}C, 300 psig initial hydrogen pressure, and 15-75 min reaction time. A moderate conversion level, over 65 wt%, was achieved at temperatures above 140{degree}C, which is significantly lower than Pt-doped acid catalysts in similar studies. Up to 70% of the hydroisomerized products are multibranched isohexadecanes. For the hydrocracked products, a very high selectivity, more than 90%, to isoparaffins resulted. Less than 1 wt% of platinum on the surface was very effective in preventing catalyst deactivation under low hydrogen pressure.},
doi = {10.1021/ef00022a007},
url = {https://www.osti.gov/biblio/6218968}, journal = {Energy and Fuels; (USA)},
issn = {0887-0624},
number = ,
volume = 4:4,
place = {United States},
year = {},
month = {}
}