Unsupported, carbon-containing molybdenum sulfide (MoS₂) and bimetallic iron-molybdenum sulfide (FeMoS) catalysts are obtained by in-situ decomposition of (a) ammonium thiomolybdate (ATM), (b) Fe(III)-containing ATM, (c) hexyltrimethylammonium thiomolybdate (HTMATM), and (d) Fe(III)-containing HTMATM, labeled Mo-1, Mo-2, Mo-3 and Mo-4 catalysts. Their activity and selectivity are tested in the hydrodesulfurization (HDS) of dibenzothiophene (DBT). HDS activity of the novel bimetallic Mo-4 catalyst is nearly two times greater than that of the reference Mo-1 catalyst, with a less favorable selectivity towards hydrogenation products compared to the reference. Surface iron and carbon contents of the catalysts are found to affect their activity as follows; Mo-4 > Mo-3 ≈ Mo-1 > Mo-2.

不支持的，硫化钼（MOS含碳₂）和双金属铁硫化钼（FeMoS）催化剂是通过获得原位的分解（a）中的铵硫代（ATM），（b）中的Fe（III）含ATM，（ c) 硫代钼酸己基三甲基铵 (HTMATM) 和 (d) 含 Fe(III) 的 HTMATM，标记为 Mo-1、Mo-2、Mo-3 和 Mo-4 催化剂。在二苯并噻吩 (DBT) 的加氢脱硫 (HDS) 中测试了它们的活性和选择性。新型双金属 Mo-4 催化剂的 HDS 活性几乎是参考 Mo-1 催化剂的两倍，与参考相比，对氢化产物的选择性较差。发现催化剂的表面铁和碳含量如下影响它们的活性；Mo-4 > Mo-3 ≈ Mo-1 > Mo-2。