Back to results
US 11,439,981 B2Granted
Catalyst for hydrolysis of carbonyl sulfide and method of producing same
AssigneeMitsubishi Heavy Industries Engineering, Ltd.
InventorsKatsumi Nochi, Masanao Yonemura, Toshinobu Yasutake, Kaori Yoshida
Life of this patent
Estimating the term…
Abstract
A catalyst for COS hydrolysis includes titanium dioxide and a barium compound supported on the titanium dioxide. The catalyst, when expressing Ba and S in the catalyst in terms of BaO and SO3, respectively, has a molar ratio of SO3 to BaO of at least 1. The catalyst converts COS and H2O in a raw material gas to CO2 and H2S.
Claims4
A catalyst for COS hydrolysis comprising:
- a titanium dioxide carrier;
- a barium compound supported on the titanium dioxide carrier;
- and
- sulfate ions supported on the titanium dioxide carrier;
- wherein, a Ba content and a S content in the catalyst are expressed in terms of BaO and SO3, respectively, and a molar ratio of SO3 to BaO in compounds supported on the titanium dioxide carrier of the catalyst is at least 2.1, and
- wherein the catalyst converts COS and H2O in a raw material gas to CO2 and H2S.
3 more elements
A method of producing a catalyst for converting COS and H2O in a raw material gas to CO2 and H2S by COS hydrolysis, comprising:
- adding a barium acetate solution to titanium dioxide containing a sulfate ion and performing kneading to obtain a kneaded product;
- extruding the kneaded product to obtain a molded catalyst;
- drying the molded catalyst;
- and
- calcining subsequent to the drying to obtain a catalyst of a titanium dioxide carrier supporting a barium compound and a sulfate ion,
- wherein, a Ba content and a S content in the catalyst are expressed in terms of BaO and SO3, respectively, and a molar ratio of SO3 to BaO in compounds supported on the titanium dioxide carrier of the catalyst is at least 2.1.
3 more elements
Dependencies are inferred from the claim text.