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45results about How to "No change in nature" patented technology

Method for effectively reducing peroxidation value of nature fats

The invention provides a method for effectively reducing the peroxidation value of nature fats, such as vegetable fats, animal fats, fish oil, and the like. The method comprises the following steps of: mixing NaHSO3 solution with the mass concentration of 3-5 percent as a reducing agent with the natural fats under the oil temperature of 80-85 DEG C and then standing more than 6 hours, washing by adopting a NaCL and NaOH mixed water solution under the temperature of 83-84 DEG C after waste liquid is discharged, respectively washing once by using a NaCL water solution and filtered water, and dehydrating oil liquid in vacuum to obtain a qualified product. In the method for effectively reducing the peroxidation value of the nature fats, the additive NaHSO3 which is available for food is adopted as the reducing agent so as to generate NaSO4 with good solubility, and the addition amount of the reducing agent is less, thereby being easy to wash; the final product does not contain any additive; the invention is easy and reliable, simple in operation and low in cost, and especially suitable for treating the index rising of peroxide in the fats as unsaturated fatty acid in the fats is oxidized during the storage or the production of the fats; the fats treated by the method has unchangeable property and effective ingredients contained in the fats.
Owner:GUANGDONG YICHAO BIOLOGICAL

Ferriporphyrin/bismuth tungstate composite photocatalytic material and preparation method thereof

The invention discloses a ferriporphyrin / bismuth tungstate composite photocatalytic material and a preparation method thereof. The composite photocatalytic material includes ferriporphyrin and bismuth tungstate, wherein the ferriporphyrin is supported on the bismuth tungstate. The preparation method includes the steps of: dissolving the ferriporphyrin in a mixture solution of acetonitrile and dimethylsulfoxide to obtain a ferriporphyrin solution; dissolving the bismuth tungstate in the ferriporphyrin solution to obtain a mixed solution of bismuth tungstate and ferriporphyrin; regulating the pH value of the mixed solution and allowing the mixed solution to stand to produce the ferriporphyrin / bismuth tungstate composite photocatalytic material. The composite photocatalytic material has good dispersibility, is strong in stability and is easy to recycle and reutilize. The photocatalytic material can be widely applied, has excellent photocatalytic performance and is environment-friendly. The preparation method has mild reaction conditions and simple process and is environment-friendly, and can be used in large-scale production.
Owner:HUNAN UNIV

Iron porphyrin-flaky bismuth tungstate two-dimensional composite material and preparation method thereof

The invention discloses an iron porphyrin-flaky bismuth tungstate two-dimensional composite material and a preparation method thereof, wherein the iron porphyrin-flaky bismuth tungstate two-dimensional composite material comprises iron porphyrin and flaky bismuth tungstate, and the iron porphyrin is immobilized on the surface of the flaky bismuth tungstate. The preparation method comprises: preparing a mixed solution of bismuth nitrate and sodium tungstate; preparing a precursor mixed solution; and carrying out a hydrothermal reaction on the precursor mixed solution. According to the present invention, the iron porphyrin-flaky bismuth tungstate two-dimensional composite material has advantages of good dispersibility, strong stability, easy recovery and reuse, excellent photocatalytic performance, environmental friendliness and the like, can efficiently degrade pollutants (such as antibiotics) in environment without the adding of H2O2, has good photocatalytic degradation effect, can significantly reduce the treatment cost, and has good application prospects and application range in the field of photocatalysis; and the preparation method has advantages of mild reaction conditions, simple process flow and environmental protection.
Owner:HUNAN UNIV

Method for preparing regular petal-shaped WO3/Fe2O3

The invention discloses a method for preparing regular petal-shaped WO3 / Fe2O3, and relates to a method for preparing WO3 / Fe2O3, which comprises the following steps: by taking hydrazine hydrate, methylbenzene, ferric acetylacetonate, oleic acid and sodium tungstate as main raw materials, adding an acidic solution to adjust the pH value, putting into a reaction kettle at 130 DEG C, taking out the solution after 24 hours, cooling at room temperature, adding ethanol into the obtained product Fe3O4, carrying out ultrasonic treatment, cleaning with ethanol under the help of a magnet, and drying to obtain the regular petal-shaped WO3 / Fe2O3. And storing in ethanol for later use. Taking 5 mmol of sodium tungstate, putting the sodium tungstate into a reaction kettle lining, stirring and dissolving, adjusting the pH value to be about 4.5 by using an acid solution, adding Fe3O4 soaked in ethanol, reacting at 160 DEG C for 96 hours, taking out the solution, cooling at room temperature, centrifugally cleaning the obtained product by using deionized water, putting into a drying oven for vacuum drying at 65 DEG C, and grinding the treated solid in an agate mortar to obtain the final product WO3 / Fe2O3. The WO3 / Fe2O3 prepared by the invention has the characteristics of small size, uniform morphology, high yield, low cost, simple synthesis process, environmental friendliness, no toxicity, excellent chemical stability, magnetism and the like, and has wide application prospects.
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY

Fe (III) cluster/bismuth oxyiodate composite photocatalytic material and preparation method and application thereof

The invention discloses a Fe (III) cluster / bismuth oxyiodide composite photocatalytic material and a preparation method and application thereof. The photocatalytic material comprises defective bismuthoxyiodide and Fe (III) clusters loaded thereon. The preparation method comprises the following steps: preparing a bismuth oxyiodide monomer; preparing defective bismuth oxyiodide through calcination;and preparing the photocatalytic material through water bath reaction. The photocatalytic material has the advantages of wide photoresponse range, low photo-generated electron and hole recombinationefficiency, high catalytic performance, good stability, good reusability, simplicity in recycling, high recycling rate and the like, can be widely used for treating pollutants in the environment, andhas high use value and good application prospect. The preparation method has the advantages of being simple in process, convenient to operate, low in raw material cost, less in energy consumption, short in time consumption, mild in reaction condition, easy to control, environment-friendly and the like, and the prepared material is high in crystallization degree, unchanged in property and good in application prospect.
Owner:HUNAN UNIV

Iron porphyrin-flaky bismuth tungstate two-dimensional composite material and preparation method thereof

The invention discloses an iron porphyrin-flaky bismuth tungstate two-dimensional composite material and a preparation method thereof, wherein the iron porphyrin-flaky bismuth tungstate two-dimensional composite material comprises iron porphyrin and flaky bismuth tungstate, and the iron porphyrin is immobilized on the surface of the flaky bismuth tungstate. The preparation method comprises: preparing a mixed solution of bismuth nitrate and sodium tungstate; preparing a precursor mixed solution; and carrying out a hydrothermal reaction on the precursor mixed solution. According to the present invention, the iron porphyrin-flaky bismuth tungstate two-dimensional composite material has advantages of good dispersibility, strong stability, easy recovery and reuse, excellent photocatalytic performance, environmental friendliness and the like, can efficiently degrade pollutants (such as antibiotics) in environment without the adding of H2O2, has good photocatalytic degradation effect, can significantly reduce the treatment cost, and has good application prospects and application range in the field of photocatalysis; and the preparation method has advantages of mild reaction conditions, simple process flow and environmental protection.
Owner:HUNAN UNIV
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