Longjing Environmental Protection Applied for Patents Related to Pt-Co Catalysts; This Invention for Pt-Co Catalysts Features Low-Temperature Activity and Anti-Sintering Properties

March 21 News: According to the State Intellectual Property Office, Fujian Longking Environmental Protection Co., Ltd. has applied for a patent titled “A Pt-Co Bimetallic Catalyst and Its Preparation Method and Application.” The application publication number is CN121669269A, the application number is CN202511849842.9, the publication date is March 17, 2026, and the application date is December 9, 2025. Inventors include Li Yajun, Lin Xiang, Chen Xiaolei, Wu Renjie, and Pan Weizhao. The patent agency is Xiamen Lixin Law and Intellectual Property Agency Co., Ltd., with patent agent Lai Xiuhua. The classification codes are B01J23/89, F23G7/07, B01J35/30, B01J37/02, B01J37/34, B01J37/10, B01J35/64.

Patent Abstract: The invention relates specifically to a Pt-Co bimetallic catalyst, its preparation method, and application. The preparation method includes: S1. Microwave-assisted hydrothermal reaction of carrier material I with alkali metal hydroxide at 100–160°C for 3–6 hours to obtain carrier material II; S2. First mixing of cobalt salt with amine compounds and water, then second mixing with carrier material II, followed by solvent removal and first calcination in air to produce carrier material III loaded with Co3O4; S3. Third mixing of carrier material III with platinum source and water, then second calcination in air to produce the Pt-Co bimetallic catalyst. The catalyst prepared by this method exhibits good low-temperature catalytic activity for low-chain alkanes and significantly improved sintering resistance at high temperatures.

Longking Environmental Protection was established on February 23, 1998, and listed on the Shanghai Stock Exchange on December 29, 2000. Its registered and office address is in Longyan, Fujian Province. It is a leading enterprise in atmospheric pollution control in China, with core businesses including dust removal, desulfurization, and other environmental protection equipment, with strong technical strength and full industry chain advantages.

Main businesses include dust removal, desulfurization, denitrification, material conveying, desulfurization operation, and power plant EPC. The company is classified under Shenwan industry categories: Environmental Protection - Environmental Equipment II - Environmental Equipment III, involving concepts like PM2.5, new materials, and state-owned enterprise reform.

In 2025, Longking Environmental Protection achieved revenue of 11.872 billion yuan and net profit of 1.108 billion yuan, ranking first in the industry with a total of 1 company, matching industry averages and medians.

Recent patent applications by Fujian Longking Environmental Protection Co., Ltd. include:

[Remaining patents omitted for brevity]

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