Premium
Composition of the Green Oil in Hydrogenation of Acetylene over a Commercial Pd‐Ag/Al 2 O 3 Catalyst
Author(s) -
Zhang Jian,
Sui Zhijun,
Zhu YiAn,
Chen De,
Zhou Xinggui,
Yuan Weikang
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600020
Subject(s) - acetylene , catalysis , pyrolysis , hydrogen , carbon chain , carbon fibers , chemistry , composition (language) , partial pressure , mass spectrometry , organic chemistry , chemical engineering , analytical chemistry (journal) , materials science , chromatography , composite material , composite number , linguistics , philosophy , oxygen , engineering
Selective acetylene hydrogenation over a commercial Pd‐Ag/Al 2 O 3 catalyst was carried out under industrial operation conditions that correspond to the “tail‐end” process. Pyrolysis gas chromatography‐mass spectrometry was used to analyze the composition of the green oil. C8–C30 linear hydrocarbons with even carbon‐numbered chains were detected as the main components of the green oil. Its chain length increased with operating time, temperature, and hydrogen partial pressure, and decreased with acetylene partial pressure. The composition of the green oil deviates from the Anderson‐Schulz‐Flory distribution. Both coupling‐hydrogenation and hydrogenation‐coupling mechanisms are involved in green oil formation.