A novel nano fischer‐tropsch catalyst for the production of hydrocarbons

Abstract

A novel silica nanospring (NS) supported cobalt catalyst for Fischer‐Tropsch synthesis (FTS) was synthesized and investigated, and the results were compared with those of a conventional cobalt catalyst. The NS catalyst was prepared using deposition of Co followed by thermal assisted reduction and characterized by scanning electron microscopy‐energy dispersive spectroscopy, transmission electron microscopy, N2 physisorption, X‐ray powder diffraction, X‐ray photoelectron spectroscopy, and H2‐temperature programmed reduction. FTS performance was evaluated in a quartz fixed‐bed microreactor (230°C, H2:CO ratio 2:1), and the products were trapped and analyzed with gas chromatography‐thermal conductivity detector (GC‐TCD, gases) and gas chromatography‐mass spectrometry (GC‐MS, semivolatiles) to determine the percentage of CO conversion and selectivity. Semivolatile products from both catalysts were C6‐C18 hydrocarbons. Even though the NS FTS catalyst was not fully reduced during the activation period it still showed higher FTS activity than the conventional catalyst, which is attributed to the higher accessibility of the gases to the Co on the NS surface. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 693–698, 2014

Theoretical insight into the selectivities of copper-catalyzing heterogeneous reduction of carbon dioxide

“…Compared to homogeneous catalytic CO 2 hydrogenation, the lower costs, higher catalyst stability, simpler production separation, catalysts regeneration, and reactor design make heterogeneous CO 2 hydrogenation more feasible for large scale manufactory [5]. A lot of heterogeneous catalytic CO 2 hydrogenation processes to produce fuel have been extensively studied, such as industrial methanol synthesis [7,8], CO 2 Fischer-Tropsch synthesis (FTS) [9], and reverse water gas shift reaction (RWGS) [10,11]. Among them, industrial methanol synthesis is one of the most significant processes.…”

Alumina Coated Silica Nanosprings (NS) Support Based Cobalt Catalysts for Liquid Hydrocarbon Fuel Production From Syngas

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