A method for synthesizing an advanced mercaptan, using liquid olefins and hydrogen sulfide as raw materials, the steps comprising:
(1) 1-hexene is added to an evaporator, adjusted steam flow is passed into a static mixer at a temperature of 160C and hydrogen sulfide is fully mixed with a molar ratio of 1:2, and the mixed gas enters a plasma reaction chamber filled with a molecular sieve-loaded transition metal oxides as a catalyst at a flow rate of 80 min-1 in empty space, at a reaction temperature of 160C, a reaction pressure of 0 MPa, and a microwave plasma as the plasma power supply, turn on the plasma power for reaction;
(2) the liquid generated after the reaction in step (1) is fed into the crude product storage tank, and the unreacted gas is recycled by recovery and compression;
(3) the crude product obtained in step (2) is distilled, and the fraction at a temperature of 150-154C is collected to obtain the target product 1-hexanethiol, which has a purity of 97% and a yield of 92.07% in terms of 1-hexene.