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Technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and photothermal catalyst

A carbon dioxide and organic fuel technology, applied in solar energy and its application fields, can solve the problems of low efficiency of photocatalytic process, high energy consumption and high production cost of thermal catalytic process, and achieve increased sunlight absorption, high reactivity and stability, Improve the effect of light energy utilization

Inactive Publication Date: 2014-09-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing organic fuels by utilizing converging sunlight and photothermal catalysts to realize efficient photothermal catalytic conversion of carbon dioxide, and at the same time utilizes solar energy to provide light and heat to assist the synthesis of photothermal catalysts, solving the problems of the thermal catalytic process in the prior art Problems such as high energy consumption, high production cost and low efficiency of the photocatalytic process

Method used

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  • Technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and photothermal catalyst
  • Technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and photothermal catalyst
  • Technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and photothermal catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Elements of transition group VIII supported on activated Al 2 o 3 Supported photothermal catalysts and their photothermal catalytic conversion of carbon dioxide:

[0032] Weigh 1.0 g of alkaline carrier to activate Al 2 o 3 , take the prepared Ni(NO 3 ) 2 solution, mix the two in a mortar and grind them evenly, place the mortar under converging simulated sunlight (10 times the light intensity of AM1.5) and irradiate the sample until the sample is completely dry, and grind the sample carefully. Weigh 0.3 g of ground powder and put it into a photothermal catalytic reactor, pass it into an air atmosphere (flow rate, 10 ml / min), and use convergent simulated sunlight (light intensity is 15 times that of AM1.5) to heat the powder , the temperature is about 300 degrees Celsius, keep it for 2 hours; change the atmosphere to a mixed gas of hydrogen and carbon dioxide (volume ratio, 4.2:1.0; flow rate, 25 ml / min), because the carbon dioxide methanation reaction is a strong e...

Embodiment 2

[0040] Ni element supported on nano-SiO 2 Carrier photothermal catalyst and load control:

[0041] Weigh five 0.5 g portions of alkaline-modified nano-SiO 2 Carrier, take the prepared Ni (NO 3 ) 2 solution, the nano-SiO 2 The carrier and five solutions were mixed in five beakers respectively, a certain volume of water was added to increase the solution volume to 20 ml, and the beakers were ultrasonically treated for 10 minutes to disperse the carrier material evenly. The treated solution was placed on a mixing table and stirred, and the solution was heated by converging simulated sunlight (12 times the light intensity of AM1.5) until it was completely evaporated to dryness, and then the powder was transferred to a mortar for careful grinding. Take by weighing 0.3 gram of this powder and pack it into a photothermal catalytic reactor, pass into the air atmosphere (flow rate, 10 ml / min), utilize the converging simulated sunlight (light intensity is 15 times of AM1.5) to heat ...

Embodiment 3

[0045] Preparation of Ru elements supported on MgO, CaO, ZrO by solar energy 2 , La 2 o 3 Supported photothermal catalyst:

[0046] Take by weighing 1.0 grams of basic carrier MgO, measure the prepared Ru according to the mass percentage of Ru metal of 2.5% 3 (CO) 12 solution, mix the carrier material with the solution in a beaker, add a certain volume of water to increase the volume of the solution to 20 ml, and ultrasonically treat the beaker for 10 minutes to disperse the carrier material evenly. The treated solution was placed on a mixing table and stirred, and the solution was heated by converging simulated sunlight (10 times the light intensity of AM1.5) until it was completely evaporated to dryness, and then the powder was transferred to a mortar for careful grinding. Take by weighing 0.3 gram of this powder and pack it into a photothermal catalytic reactor, pass into the air atmosphere (flow rate, 10 ml / min), utilize the converging simulated sunlight (light intensi...

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Abstract

The invention discloses a technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and a photothermal catalyst. Sunlight is utilized to supply light and heat for the synthesis and catalytic process of the photothermal catalyst, and the photothermal catalyst can simultaneously absorb and utilize ultraviolet light, visible light and infrared light parts in sunlight, so that a phtothermal catalytic reaction is induced to prepare the organic fuel through reducing carbon dioxide by using hydrogen. The photothermal catalyst comprises the following components: an active component which is a 2-30 nano-scale non-stoichiometric oxide belonging to a VIII-family element in a transition family and a carrier material which is an oxide or carbon material with the specific surface area of 30-1000cm<2> / g, alkaline resistance, high heat conductivity or photocatalytic activity. A steeping and in-situ sintering method or photodepositing and in-situ sintering method is used as a synthesis method so that the energy consumption is low, and the photothermal catalyst has high activity and long service life by using a solar-assisted in-situ sintering technology. The technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and the photothermal catalyst is low in energy consumption in the catalytic process, high in organic fuel production efficiency and stable in catalyst activity.

Description

technical field [0001] The invention relates to solar energy and its application, in particular to a technology for photothermal catalysts to convert carbon dioxide into organic fuels by using solar energy. Background technique [0002] Since the 20th century, the take-off of large-scale industrial production has led to the rapid development of the economy and the rapid improvement of human living standards. However, it has also led to the rapid consumption of traditional energy sources such as oil and coal and the release of carbon dioxide into the atmosphere. In the 21st century, the over-emission of greenhouse gas carbon dioxide has led to the imbalance of the atmospheric ecosystem has become a topic of general concern to governments. Reconverting carbon dioxide into organic fuels through chemical means can not only reduce the concentration of carbon dioxide in the atmosphere, but also generate energy and solve the problem of human society. Due to the environmental and en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C9/04C07C9/06C07C11/04C07C1/02C07C1/04C07C31/04C07C31/08C07C29/158C07C47/04C07C45/27C07C49/08C07C45/54C10G2/00B01J23/46B01J23/755B01J23/42B01J23/44B01J23/745B01J23/75
CPCY02P20/52
Inventor 欧阳述昕孟宪光叶金花加古哲也王涛刘乐全李鹏胡慧林许华王德法
Owner TIANJIN UNIV
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