Premium
Coal fly ash‐derived mesoporous SBA‐15 as support material for production of liquid hydrocarbon through Fischer–Tropsch route
Author(s) -
Gupta Pavan K.,
Mahato Abhishek,
Oraon Pikkoo,
Gupta Goutam Kishore,
Maity Sudip
Publication year - 2020
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2471
Subject(s) - mesoporous material , catalysis , bimetallic strip , chemical engineering , cobalt , incipient wetness impregnation , desorption , fischer–tropsch process , mesoporous silica , adsorption , syngas , materials science , hydrocarbon , nuclear chemistry , inorganic chemistry , transmission electron microscopy , chemistry , selectivity , organic chemistry , nanotechnology , engineering
The supernatant solution of silicate species extracted from coal fly ash (CFA) by NaOH fusion is used under acidic conditions with surfactant pluronic P‐123 to prepare the mesoporous silica (SBA‐15). Structural properties of prepared SBA‐15 are found close to those prepared by pure chemicals. Furthermore, the synthesized mesoporous silica (SBA‐15) from CFA is used as support in Fischer–Tropsch synthesis (FTS). The obtained mesoporous material has a surface area of 643 m 2 /g and a pore size of 8.24 nm. Co–Fe bimetallic catalyst containing 15 wt% of cobalt and 5 wt% of iron is prepared by incipient wetness impregnation of cobalt nitrate and iron nitrate salts over CFA‐derived SBA‐15. These mesoporous support and catalyst are characterized by X‐ray diffraction (XRD), N 2 adsorption–desorption, H 2 ‐temperature‐programmed reduction (TPR), NH 3 ‐temperature‐programmed desorption (TPD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). FTS experiment is showing 65.53% of C 5+ selectivity. The results indicate that the nanosubstrate material derived from CFA may be used as support for FTS activity with further improvements.