Unlock instant, AI-driven research and patent intelligence for your innovation.
Multivalent heterojunction iron-based catalyst and application thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An iron-based catalyst and heterojunction technology, applied in catalysts, carbon compound catalysts, physical/chemical process catalysts, etc., can solve the problems of high energy consumption, poor selectivity of low-carbon olefins, and high cost, and achieve the goal of changing the adsorption structure, improving the Conversion rate, effect of particle size reduction
Pending Publication Date: 2021-11-23
LUOYANG NORMAL UNIV
View PDF2 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, when iron-based catalysts were used, the selectivity of lower olefins in the product was poor (<58%)
At present, carbon dioxide hydrogenation catalysts generally have short service life, high requirements on operation and equipment, high energy consumption and high cost
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
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0018] A polyvalent heterojunction iron-based catalyst for producing low-carbon olefins by hydrogenation of carbon dioxide, which consists of the following components in parts by mass: 60 parts of magnetite powder, 20 parts of nano-magnesium powder, 10 parts of plant ash, and quartz powder 10 servings.
[0019] The particle size of the magnetite powder is below 200 mesh.
[0020] The particle size of the magnesium powder is all below 100 nm.
[0021] A polyvalent heterojunction iron-based catalyst for preparing light olefins by hydrogenation of carbon dioxide, comprising the following preparation steps:
[0022] 1) Add the following materials in parts by mass in the ball mill tank in turn: 60 parts of magnetite powder, 20 parts of magnesium powder, 10 parts of plant ash, 10 parts of quartz powder, the mass ratio of balls and materials in the ball mill tank is 55:1 , and then replace the air in the ball milljar with hydrogen, and after the air in the ball mill jar is complet...
Embodiment 2
[0029] A polyvalent heterojunction iron-based catalyst for producing low-carbon olefins by hydrogenation of carbon dioxide, which consists of the following components in parts by mass: 75 parts of magnetite powder, 15 parts of nano-magnesium powder, 5 parts of plant ash, and quartz powder 5 servings.
[0030] The particle size of the magnetite powder is below 200 mesh.
[0031] The particle size of the magnesium powder is all below 100 nm.
[0032] A polyvalent heterojunction iron-based catalyst for preparing light olefins by hydrogenation of carbon dioxide, comprising the following preparation steps:
[0033] 1) Add the following materials in parts by mass in the ball mill tank in turn: 75 parts of magnetite powder, 15 parts of magnesium powder, 5 parts of plant ash, 5 parts of quartz powder, the mass ratio of balls and materials in the ball mill tank is 55:1 , and then replace the air in the ball mill jar with hydrogen, and after the air in the ball mill jar is completely ...
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
Property
Measurement
Unit
particle size
aaaaa
aaaaa
particle size
aaaaa
aaaaa
particle diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention provides a multivalent heterojunction iron-based catalyst and application thereof, belonging to the technical field of catalyst preparation. The multivalent heterojunction iron-based catalyst is prepared from the following components in parts by mass: 60-75 parts of magnetite ore powder serving as a catalyst, 15-20 parts of nanometer magnesiumpowder serving as a reducing agent, 5-10 parts of plant ash serving as a hydrogenation additive and 5-10 parts of quartzpowder serving as a grinding aid. The catalyst is low in raw material cost, simple in preparation method and mild in use condition. When the catalyst is used, the catalyst is pre-activated by hydrogen with a certain concentration, so the selectivity of low-carbon olefin and the conversion rate of carbon dioxide can be remarkably improved.
Description
technical field [0001] The invention belongs to the technical field of catalyst preparation, and relates to an iron-based catalyst, in particular to a multivalent state heterojunction iron-based catalyst and its application. Background technique [0002] With the continuous increase of carbon dioxide content, the global greenhouse effect becomes more and more significant. Hydrofining carbon dioxide to produce high-quality chemical products such as low-carbon olefins can not only reduce carbon dioxide emissions, but also provide solutions for the sustainable development of the chemical industry. Due to the high energy barrier of direct hydrogenation of carbon dioxide to low-carbon olefins, poor selectivity of low-carbon olefins, low added value of by-products such as methane and carbon monoxide, and poor economic benefits, high-efficiency catalysts are required. Existing hydrogenation of carbon dioxide to produce low-carbon olefins generally adopts two schemes: reverse water...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More