Preparation of Nitrogen Doped Biochar-Based Iron Catalyst for Enhancing Gasoline-Range Hydrocarbons Production
Jingyang Bai, Chuan Qin, Yanfei Xu, Di Xu, Mingyue Ding
Abstract
Developing catalysts to obtain high space time yield (STY) of gasoline-range hydrocarbons via Fischer–Tropsch synthesis (FTS) is a huge challenge due to the restriction of Anderson–Schulz–Flory distribution. Herein, a nitrogen doped biochar-based iron catalyst was synthesized by a one-step method using sugar cane bagasse as carbon precursor, which exhibited an excellent gasoline STY of 8.65 gC5–12 gFe–1 h–1, exceeding most reported catalysts. A strong positive relationship between the amount of pyrrolic N and long-chain hydrocarbons selectivity was displayed. The characterization results indicated that pyrrolic N configuration on anchor sites tuned effectively the dispersion of iron species and metal–support interaction as well as CO adsorption, improving the FTS performance.