Check patentability & draft patents in minutes with Patsnap Eureka AI!

methane oxidation catalyst

A methane oxidation and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, etc., can solve problems such as methane escape, and achieve the effect of excellent methane oxidation activity

Active Publication Date: 2022-03-11
MITSUI MINING & SMELTING CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, there is a problem of generating 0.2% to 2% of unburned methane, so-called "methane slip"

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • methane oxidation catalyst
  • methane oxidation catalyst
  • methane oxidation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0092] Hereinafter, the present invention will be described in more detail based on the following examples and comparative examples.

[0093]

[0094] Dissolve dinitrosodiammine platinum in ammonia water to make a Pt solution with a pH of 10, and then heat the solution to 60°C, then add tin oxide powder of a specified concentration (D50 = 44 μm, BET = 14m 2 / g), making Pt loaded on SnO 2 After granulation, heat the solution to evaporate to dryness, and then use a large hot air dryer to dry it, bake it at 550°C for 3 hours in the atmosphere, and crush it with a mortar to obtain Pt-loaded tin oxide powder (sample).

[0095] At this time, the Pt content of the Pt solution is adjusted so that the Pt (platinum) relative to the SnO 2 The content is 2wt% (comparative example 1-1), 4wt% (comparative example 1-2), 8wt% (comparative example 1-3), 12wt% (comparative example 1-4).

[0096]

[0097] Dissolve dinitrosodiammine platinum in ammonia water to make a Pt solution with a pH...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A methane oxidation catalyst having a configuration in which platinum is supported on tin oxide has been further improved so that it can exhibit excellent methane oxidation activity at a lower temperature. A methane oxidation catalyst is proposed for oxidizing methane in exhaust gas, which is characterized in that it has a structure in which platinum is supported on tin oxide, and its diffraction pattern (2θ = 37 to 41°), the content (wt%) of platinum relative to tin oxide is represented as x, and the ratio of the peak intensity of platinum on the 111 plane to the peak intensity of tin oxide on the 111 plane (Pt(111) / SnO 2 When (111)) is set to y, formula (1) is satisfied. Formula (1) · · y≤0.27x.

Description

technical field [0001] The present invention relates to a methane oxidation catalyst for oxidizing unburned methane contained in exhaust gas. Background technique [0002] Currently, heavy oil is used as fuel for diesel engines for generators, ships, etc., but due to the strong demand for environmental preservation / improvement, the conversion to CH 4 Fuel switching. [0003] As the use of CH 4 A typical internal combustion engine of the fuel includes a "gas engine". [0004] The gas engine uses the combustion of gas to generate electricity, and uses its exhaust heat for the combined heating and power generation (steam supply and power generation), so-called "cogeneration" One of the engines used in . [0005] Gas engines have the following advantages: not only CO 2 The discharge volume is small, and in addition to natural gas and city gas, even low-calorie gases such as gases generated in gasification and melting furnaces can be used for high-efficiency operation. It s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/62B01D53/94B01J35/10F01N3/10F01N3/28
CPCB01D53/94F01N3/10F01N3/28B01J23/42B01J23/626B01J37/0027B01J37/0009B01J37/0213B01J35/394B01J35/393B01J35/30B01J35/612B01J35/40B01J35/613B01J23/62B01J35/60B01J35/392F01N3/2066F01N2370/02
Inventor 林克彦阿部一幸中原祐之辅田平泰规中野宽子金泽一弘五味保城
Owner MITSUI MINING & SMELTING CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com