Affiliation:
1. CSIR – Central Institute of Mining and Fuel Research (Digwadih) PO: FRI Dhanbad 828108 Jharkhand India
2. Department of Chemical Engineering Indian Institute of Technology (ISM) Dhanbad 826004 Jharkhand India
3. CSIR – Central Glass and Ceramic Research Institute Kolkata 700032 India
4. Department of Chemical Engineering and Biochemical Engineering Rajiv Gandhi Institute of Petroleum Technology Jais Amethi 229304 India
Abstract
AbstractSBA‐15 is synthesized using triblock copolymer Pluronic P123 as the structure directing agent and different silica sources such as tetraethyl orthosilicate (TEOS), sodium metasilicate, coal fly ash (CFA) derived supernatant and a mix of sodium metasilicate, CFA‐derived supernatant for comparative study towards Fischer‐Tropsch synthesis (FTS). The active metal cobalt (15 wt. %) has been impregnated in each support via the wet impregnation technique. The catalysts and supports are characterized by N2 adsorption‐desorption, Field Emission Scanning Electron Microscopy (FESEM), High‐Resolution Transmission Electron Microscopy (HRTEM), X‐ray Diffraction (XRD), X‐ray Energy Dispersion Spectrophotometer (EDX), Fourier Transform Infrared (FTIR), and Temperature Programmed Reduction (TPR). The catalytic performance of synthesized catalysts for the FTS has been investigated in a fixed bed tubular reactor at T=220 °C, P=30 bar, and GHSV=500 h−1 using simulated syngas composition equivalent to coal‐derived syngas using air blown fixed bed gasifier having H2/CO molar ratio of 2 : 1. The maximum CO conversion and middle distillate (C6−C20) selectivity is observed as 59.2 % and 84.6 % respectively for the catalyst support synthesized from mix of sodium metasilicate and CFA‐derived supernatant.