Method for efficiently preparing methanesulfonic acid from methyl mercaptan

The invention discloses a method for efficiently preparing methanesulfonic acid from methyl mercaptan. The method comprises the following steps: introducing methyl mercaptan and oxygen into a fixed bed reactor loaded with a supported catalyst, and carrying out gas-liquid separation on a component obtained by reaction to obtain methanesulfonic acid, the supported catalyst comprises a metal active component and a carrier, and the carrier is aluminum oxide; by taking the mass of the carrier as a reference, the contents of the metal active components are respectively as follows: 5-15 wt% of tungsten, 1-5 wt% of potassium, 0.5-2.5 wt% of platinum, 0.1-2 wt% of silver and 0.1-0.5 wt% of iridium. According to the invention, methyl mercaptan can be subjected to one-step oxidation continuous reaction to directly generate methanesulfonic acid. 本发明公开了一种由甲硫醇高效制备甲磺酸的方法。该方法包括：将甲硫醇与氧气通入装有负载催化剂的固定床反应器中，反应所得组分经气液分离，即得到甲磺酸；所述负载催化剂包括金属活性组分和载体，所述载体为三氧化二铝；以载体质量为基准，各金属活性组分的含量分别为：钨5-15wt％，钾1-5wt％，铂0.5-2.5wt％，银0.1-2wt％，铱0.1-0.5％。本发明