High‐Quality Gasoline Directly from Syngas by Dual Metal Oxide–Zeolite (OX‐ZEO) Catalysis

Despite significant efforts towards the direct conversion of syngas into liquid fuels, the selectivity remains a challenge, particularly with regard to high‐quality gasoline with a high octane number and a low content of aromatic compounds. Herein, we show that zeolites with 1D ten‐membered‐ring (10‐MR) channel structures such as SAPO‐11 and ZSM‐22 in combination with zinc‐ and manganese‐based metal oxides (Zn_aMn_bO_x) enable the selective synthesis of gasoline‐range hydrocarbons C₅–C₁₁ directly from syngas. The gasoline selectivity reached 76.7 % among hydrocarbons, with only 2.3 % CH₄ at 20.3 % CO conversion. The ratio of isoparaffins to n‐paraffins was as high as 15, and the research octane number was estimated to be 92. Furthermore, the content of aromatic compounds in the gasoline was as low as 16 %. The composition and structure of Zn_aMn_bO_x play an important role in determining the overall activity. This process constitutes a potential technology for the one‐step synthesis of environmentally friendly gasoline with a high octane number from a variety of carbon resources via syngas.