US 12,103,872 B1
Polycyclic azide desulfurizer and synthesis method thereof
Xingyu Peng, Chengdu (CN); Jianhua Gong, Chengdu (CN); Feng Ge, Chengdu (CN); Yang Ren, Chengdu (CN); Huaiyu Sun, Chengdu (CN); Lisheng Liu, Chengdu (CN); Zhihua Yuan, Chengdu (CN); Ke Yan, Chengdu (CN); Feng Ye, Chengdu (CN); and Hong Li, Chengdu (CN)
Assigned to Southwest Petroleum University, (CN)
Filed by Southwest Petroleum University, Chengdu (CN)
Filed on Dec. 19, 2023, as Appl. No. 18/545,470.
Claims priority of application No. 202310839580.2 (CN), filed on Jul. 10, 2023.
Int. Cl. C02F 1/68 (2023.01); C02F 101/10 (2006.01)
CPC C02F 1/68 (2013.01) [C02F 2101/101 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A polycyclic azide desulfurizer, comprising the following raw materials in parts by mass: 20 parts to 35 parts of an alcohol amine, 20 parts to 35 parts of an amide, and an aldehyde, wherein the aldehyde is 10 parts to 15 parts of a small-molecule aldehyde or 20 parts to 35 parts of a polyaldehyde, wherein the alcohol amine is ethylene glycol amine, and wherein the azide desulfurizer is synthesized by a method comprising the following steps:
1) mixing the alcohol amine with the amide and stirring to obtain a mixture I, heating the mixture I, adding a catalyst I dropwise to the mixture I, and performing reaction to obtain a monocyclic triazine, then heating the monocyclic triazine, mixing with the polyaldehyde and stirring to obtain a mixture II, adding a catalyst II dropwise to the mixture II, and performing coupling reaction while stirring; alternatively,
mixing the small-molecule aldehyde with the amide and stirring to obtain a mixture III, heating the mixture III, adding a catalyst I dropwise to the mixture III, and performing reaction to obtain a reaction system, adding the alcohol amine to the reaction system, adding a catalyst II dropwise thereto, and performing coupling reaction while stirring; and
2) separating a by-product from a product obtained after the coupling reaction out, and purifying the product.