Molybdenum compound and method for producing same

A molybdenum compound represented by general formula MoXa (in the formula, X is a Group 14 element, Group 15 element, or Group 16 element, and a is 0.5, 1, or 2. The molybdenum compound is represented by general formula MoXa (wherein X is a Group 14 element, the number of functional groups per unit area is 10/nm2 or less, X is a Group 15 element or a Group 16 element, the number of functional groups per unit area is 100/nm2 or less, and the particle diameter is 10 nm or more and less than 1000 nm. 一种钼化合物，其为通式MoXa(式中，X为第14族元素、第15族元素或第16族元素，a为0.5、1或2。)所示的钼化合物，上述通式MoXa中X为第14族元素时，每单位面积的官能团数为10个/nm2以下，上述通式MoXa中X为第15族元素或第16族元素时，每单位面积的官能团数为100个/nm2以下，粒径为10nm以上且小于1000nm。