US 12,128,391 B2
Method for preparing carbonized silk photocatalyst and use thereof
Xingye Zeng, Guangdong (CN); Hanlu Wang, Guangdong (CN); Shufeng Shan, Guangdong (CN); Zhanjun Zhang, Guangdong (CN); Shikui Wu, Guangdong (CN); Rujin Zhou, Guangdong (CN); and Cunhui Lin, Guangdong (CN)
Assigned to GUANGDONG UNIVERSITY OF PETROCHEMICAL TECHNOLOGY, Guangdong (CN)
Appl. No. 17/635,402
Filed by GUANGDONG UNIVERSITY OF PETROCHEMICAL TECHNOLOGY, Guangdong (CN)
PCT Filed Jul. 17, 2020, PCT No. PCT/CN2020/102830
§ 371(c)(1), (2) Date Feb. 15, 2022,
PCT Pub. No. WO2021/027491, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 201910752163.8 (CN), filed on Aug. 15, 2019.
Prior Publication US 2022/0288575 A1, Sep. 15, 2022
Int. Cl. B01J 35/39 (2024.01); B01J 21/18 (2006.01); B01J 35/58 (2024.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01); C10G 27/04 (2006.01)
CPC B01J 35/39 (2024.01) [B01J 21/18 (2013.01); B01J 35/58 (2024.01); B01J 37/0203 (2013.01); B01J 37/084 (2013.01); C10G 27/04 (2013.01); C10G 2300/703 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for photocatalytic desulfurization of a fuel oil, comprising:
mixing a fuel oil to be desulfurated, an extraction agent and a carbonized silk photocatalyst, with air being used as an oxidizing agent, to conduct a photocatalytic reaction under light irradiation, and
separating an upper oil phase to obtain a desulfurated fuel oil,
wherein the carbonized silk photocatalyst is prepared by the method comprising:
1) soaking a natural silk and an activator in water, taking out the soaked silk, and drying the same; and
2) roasting the dried silk under the protection of an inert atmosphere to obtain a carbonized silk photocatalyst,
wherein in step 1), the activator is one or more selected from the group consisting of oxalic acid, phosphotungstic acid, citric acid, lauric acid, boric acid, and potassium chloride.