A new catalytic system for single-step alkane synthesis from furans and carboxylic acids was investigated using noble metals-supported red mud (RM) catalysts. Maximum alkane selectivities were 100%, 87%, and 56% over Pt/RM, Pd/RM, and Ru/RM respectively. Potassium doping prolonged the catalyst life by suppressing methanation reaction, decreased coking, and enhancing the stability of noble metals towards oxidation. Five functionalities were accomplished on the modified catalysts: partial reduction of propionic acid on noble metals; moderating coking reactions on K, suppressing methanation on K, ketonization of acid on RM, and condensation-hydrodeoxygenation reaction on RM. Magnetite played significant role in catalyzing ketonization reaction.

研究了一种使用贵金属负载的赤泥（RM）催化剂从呋喃和羧酸合成单步烷烃的新型催化系统。与Pt / RM，Pd / RM和Ru / RM相比，最大烷烃选择性分别为100％，87％和56％。钾掺杂可通过抑制甲烷化反应，减少焦化并增强贵金属抗氧化的稳定性来延长催化剂寿命。改性催化剂具有五种功能：贵金属上丙酸的部分还原；缓和K上的焦化反应，抑制K上的甲烷化，RM上酸的酮化，以及RM上的缩合加氢脱氧反应。磁铁矿在催化酮化反应中起重要作用。