Direct Coal Liquefaction Using Iron Carbonyl Powder Catalyst

Abstract

Direct coal liquefaction involves catalyzed interactions between molecular hydrogen and coal‐oil slurries at elevated pressure and temperature, typically in the presence of an iron‐based catalyst. Iron carbonyl powder as an alternative first‐stage catalyst was investigated. A series of experimental tests under mild liquefaction conditions were carried out with a high‐pressure batch reactor in order to compare the performance of the iron carbonyl precursor to the traditional superfine iron oxide catalyst. The carbonyl iron powder performed very well in terms of total conversion of coal as well as yield of coal oil product. The iron carbonyl powder acts as an effective precursor for the in situ generation of active iron sulfide. The simple kinetic models for coal liquefaction in the literature were found to be qualitatively consistent with the yields of preasphaltenes, asphaltenes, and oils obtained from the experiments.

Effect of Blending of Shellac, Carbonyl Iron Powder, and Carbonyl Iron Powder/Carbon Nanotube Microcapsules on the Properties of Coatings

“…They are ideal choices for developing high-performance electromagnetic-absorption materials [26]. As a typical magnetic metal powder, carbonyl iron powder (CIP) has been widely used as an absorbent, due to the high magnetic permeability, high saturation magnetization, high Curie temperature, excellent absorption performance, and wide electromagnetic-absorption frequency band [27][28][29][30][31]. The coatings with a shell-like structure on CIP magnetic cores [32] have advantages such as a low density, high specific surface area, and large pores.…”

Study on Hydrogenation Performance of Oil-Soluble Molybdenum Catalyst in Coal-Oil Co-Processing

“…As more and more people are keen on developing innovative hydrogenation catalysts, the pace of progress in this area is accelerating. Low-cost and environmentally friendly Fe-based particle or supported catalysts (Kuznetsov et al 2000;Kaneko et al 2002;Sheng et al 2017;Zhou et al 2018;Xie et al 2018;Lokhat et al 2019;) have been widely studied and applied in industrial installations. Unfortunately, the mediocre hydrogenation performance of iron catalyst results in general performance in coal-oil co-processing.…”