Patent
Active alumina catalyst, and its preparation method and use
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TLDR
The active alumina catalyst can improve selectivity and yield of compound alkyl sulfide and methanethiol as mentioned in this paper, and can be used to improve the selectivity of compounds such as dimethyl sulfide.Abstract:
The invention relates to a catalyst technology, concretely, an active alumina catalyst and its producing method. Components of the active alumina catalyst are: Na 0.8-0.1 percents, Fe<0.1 percent the others are alumina whose purity is over 99 percent. The producing approach is: using aluminium hydroxide powder or (and) bodhmite powder as material; evenly mixing aluminium hydroxide powder or (and) bodhmite with aqua fortis solution deployed by deionized water; forming, drying in 100-150deg.C for 2-8 hours, baking in 400-600deg.C for 3-20 hours, bolstering and getting production. Adopting the invention can improve selectivity and yield of compound alkyl sulfide and alkyl sulfhydrate, esp. dimethyl sulfide and methanethiol.read more
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Process for preparation of dimethyl thio-ether and methylthio-alcohol
Tian Xiyi,Zhang Huaiyou +1 more
TL;DR: The preparation method of dimethyl sulfide and methyl mercaptan is characterized by that it uses the sulfide containing 30-99% (mol%) hydrogen sulfide, methyl alcohol and methyl alcohol as raw materials, under the action of r-Al2O3 or alumino silica gel catalyst as mentioned in this paper.