Gupta, Pavan K. and Kumar, Vineet and Maity, Sudip and Kamal, Sumit and Bal, Rajaram (2025) Coal Fly ash derived SBA-15Supported Co/Fe catalysts for Fischer Tropsch Synthesis. Journal of the Indian Chemical Society, 102 (12).

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Abstract

This research article investigates the conversion of syngas (CO + H2) using Zr/Ru-promoted Co–Fe-based Fischer–Tropsch catalysts supported on SBA–15 mesoporous silica synthesized from coal fly ash (CFA). The support and catalysts are characterized using X-ray Diffraction (XRD), H2–Temperature Programmed Reduction (H2-TPR), Energy Dispersive X-ray Spectroscopy (EDX), and High-Resolution Transmission Electron Microscopy (HRTEM). The main surface phases are identified as Co3O4 and Fe2O3 for Co-rich and Fe-rich bimetallic catalysts, respectively. Catalyst performance is evaluated in a fixed-bed tubular reactor under conditions of syngas (H2/CO ∼ 2:1) at 220 °C, 30 bar pressure, and a gas hourly space velocity (GHSV) of 500 h−1 for hydrocarbon synthesis. The Zr–Ru promoted Co-based catalyst achieves a higher CO conversion of 80.3 %, while the Zr–Ru promoted Co-rich bimetallic catalyst demonstrates superior selectivity (∼88.7 %) for liquid hydrocarbons (C5+). Catalyst stability is assessed through analysis of CO conversion over time, and spent catalysts are further characterized by XRD to understand phase changes during the course of reaction.

Item Type:	Article
Subjects:	Chemicals and Liquid Fuels
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	07 Apr 2026 10:23
Last Modified:	07 Apr 2026 10:23
URI:	https://cimfr.csircentral.net/id/eprint/2968

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