Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalyst for producing H2 by methane directly conversion based on Fe3O4 and preparation method thereof

A catalyst and direct technology, applied in the field of composite Fe3O4 type methane direct conversion to H2 catalyst and its preparation, can solve the problems of low temperature and loss of function, and achieve the effects of improving activation, prolonging service life and reducing temperature

Inactive Publication Date: 2008-05-28
XIAMEN UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This process is somewhat similar to the previous synthesis gas (syngas) process. The key to realizing the above two-step reaction is: (1) The temperature of the reaction must be controlled as low as possible, which is a very important issue in terms of economy. ; (2) in the reaction, magnetite (Fe 3 o 4 ) as a H 2 The storage and supply medium, its own lifetime is the key to whether the process can be realized, but unfortunately, in the reaction environment >1000K, magnetite (Fe 3 o 4 ) will quickly lose their effectiveness due to sintering

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

[0024] Example 1: The catalyst contains 5.63 mol% Co, 8.19 mol% Cr. Weigh 12.1200gFe(NO 3 ) 3 9H 2 O, 0.4917gCo(NO 3 ) 2 ·6H 2 O, 0.9832gCr(NO 3 ) 3 9H 2 O, add 22.8mL distilled water to prepare a mixed solution of about 1.5mol / L; add 8.195g urea to the mixed solution, stir evenly, heat up to 90°C, and react at a constant temperature for 3h; filter and wash with distilled water until neutral; use ethanol Replace the water in it until no water is detected in the eluate; put the filter cake in an oven and dry it at a constant temperature of 150°C for 10 hours; take it out and put it in a muffle furnace and roast it at 500°C for 10 hours; crush the roasted product into 20-40 mesh powder to obtain the catalyst MH-1.

Embodiment 2

[0025] Example 2: The catalyst contains 8.35 mol% Cu, 12.61 mol% V. Weigh 12.1200gFe(NO 3 ) 3 9H 2 O, 0.5001gCu(CH 3 COO) 2 ·H 2 O, 0.4425gNH 4 VO 3, add 24.2mL distilled water to prepare a mixed solution of about 1.5mol / L; add 6.532g urea to the mixed solution, stir evenly, raise the temperature to 85°C, and react at constant temperature for 4h; filter and wash with distilled water until neutral; replace with ethanol From the water content to the eluate, no water can be detected; put the filter cake in an oven and dry it at a constant temperature of 150°C for 8 hours; take it out and put it in a muffle furnace and roast it at 550°C for 10 hours; crush the roasted product into 20-40 mesh powder to obtain the catalyst MH -2.

Embodiment 3

[0026] Embodiment 3: Adopt similar method among the embodiment 1, prepare a series of catalysts, catalyst, component, component ratio, precipitation agent, precipitation agent ratio, drying temperature, drying time, calcination temperature and calcination time are shown in Table 1.

[0027] Table 1

[0028] catalyst

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 catalyst used for making H2 by directly conversing methanol based on Fe3O4 and a preparation method, relating to a catalyst for making H2, which provide a catalyst for making H2 by directly conversing methanol based on Fe3O4 and the preparation method which can maintain economy, stability, and selectivity and can be used at low temperatures. The catalyst at least comprises oxysalt of iron element, oxysalt of a first auxiliary component, and oxysalt of a second auxiliary component; the first auxiliary component is at least one oxysalt of the copper element, the nickel element, the zirconium element, the palladium element, the platinum element and the cobalt element, the second auxiliary component is at least one oxysalt of the chromium element, the tungsten element, the aluminum element, the vanadium element and the titanium element. The oxysalt of the iron element is mixed with the first and the second auxiliary components to prepare mixed solution, and the precipitator is added until the metal icons are precipitated, and filtering water is used for washing until being neutral, and the water is replaced for drying, calcinating, and cooling until reaching the room temperature, and the catalyst for making H2 by directly conversing methanol based on Fe3O4 can be obtained to be crushed.

Description

technical field [0001] The present invention relates to a kind of preparation H 2 Catalysts, especially related to a composite Fe 3 o 4 Direct conversion of methane to H 2 Catalyst and method for its preparation. Background technique [0002] Hydrogen is widely used in industrial processes such as petroleum, chemical industry, metallurgy, medicine and aerospace, among which the largest amount is used in the chemical industry, especially the synthetic ammonia industry and petroleum refining industry. As humans pay more and more attention to environmental issues, the emission standards (allowing the emission of sulfur and nitrogen compounds) of traditional fossil fuels (such as diesel and gasoline) are becoming more and more stringent, and it is the general trend to seek environmentally friendly fuels. As a clean fuel, hydrogen is an ideal energy source due to its high combustion calorific value and no emission of environmental greenhouse gases. The use of hydrogen energy ...

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 Applications(China)
IPC IPC(8): B01J23/86B01J23/847B01J23/88B01J23/89C01B3/26
Inventor 罗正鸿尤小姿
Owner XIAMEN UNIV