31results about How to "Improve texture properties" patented technology

The invention discloses a composite oxide and a preparation method thereof. The preparation method is characterized in that a precursor solution of the composite oxide is prepared; the precursor solution and an alkaline solution are subjected to titration reaction with high-speed stirring under room temperature according to a coprecipitation method, wherein the pH in the titration reaction is 8.5-9.5; composite oxide sizing obtained in the titration reaction is quickly heated to be 50-80 DEG C to enable the growing of crystal grains, and the composite oxide sizing is stirred for 1-3 hours under 50-80 DEG C; the alkaline solution is supplemented to maintain the pH of the composite oxide sizing; the composite oxide sizing is cooled to the room temperature and stood for 1-6 days to enable the slow developing of the crystal grains; then the composite oxide sizing is aged for 6-8 hours under the temperature of 90-95 DEG C to enable the developing of particles; finally, the composite oxide sizing is roasted at the temperature of 600-1000 DEG C to obtain the composite oxide. Compared with a sample prepared by a traditional constant-temperature titration reaction, the composite oxide prepared by the method has the characteristics of being high in specific surface area, high in pore volume, and wide in pore size distribution; the composite oxide can be used as a carrier material in exhaust cleaning of moving sources such as a motor vehicle, and treatment of solid sources such as catalytic combustion or volatile gas, and can also be directly used as a catalyst, so that the composite oxide is applicable to various application fields.

The invention relates to a preparation method of graded mesoporous hydrated alumina microspheres with controllable crystal forms. The method comprises the following steps: quickly add a certain amount of formamide into the sodium aluminate solution, and stir evenly; then quickly add the solution into a hydrothermal kettle, heat and hydrolyze for a period of time, filter the white precipitate produced after cooling, and Washing with water and absolute ethanol in sequence to obtain a filter cake; drying the filter cake to obtain flower-like mesoporous hydrated alumina microspheres assembled from two-dimensional nanosheets in different crystal forms. The flower-shaped alumina hydrate microspheres of different crystal forms prepared by the present invention have good texture properties, and changing the hydrothermal time, hydrothermal temperature and formamide addition can make the pore structure parameters change within the following range: specific surface area 103.7~250.1m 2 / g, pore volume 0.20~0.35cm 3 / g, the average pore size is 4.3-5.4nm, and the pore size is concentrated at 3.3-5.2nm.

The invention discloses a pretreatment method for a carbon carrier used in a battery catalyst and the carbon carrier. Including: washing the carbon carrier with an organic solvent, drying and crushing after filtering and rinsing, pickling with oxidative acid, dispersing in water after filtering and rinsing, introducing ammonia gas and stirring rapidly, drying, thermal decomposition, evaporating the suspension liquid to dryness, and obtaining The solid is ground into powder to make a carbon carrier for battery catalyst. The pretreatment method of the present invention can improve the texture properties and surface chemical properties of the original carbon carrier itself, and the prepared carbon carrier can increase the loading and dispersion of noble metal particles when preparing electrocatalysts; the pretreatment method can reduce the carbon carrier in the carbon carrier. Ash impurity content, the treatment method of the present invention reduces the carbon carrier washing time and deionized water consumption, and provides a more environmentally friendly, friendly and efficient pretreatment process for further industrial production.

The invention discloses an inulin low-fat yogurt pudding and a preparation method thereof, and belongs to the technical field of food processing. The inulin low-fat yogurt pudding is prepared from the following components by weight percent: 30-40% of yogurt base, 2-10% of inulin, 0.05-0.5% of a thickener, 0.001-5% of a sweetening agent and the balance of water, wherein the inulin is a soluble dietary fiber, can selectively promote growth of colon probiotics, and has the functions of reducing blood sugar concentration, maintaining lipid metabolism balance, improving the bioavailability of mineral elements, enhancing the immunity of the organism, and the like. The inulin low-fat yogurt pudding disclosed by the invention contains the inulin dietary fiber, is low in fat content, and smooth in mouthfeel, has the functions of improving the intestinal microenvironment, controlling blood fat and blood sugar levels, reducing the energy, promoting absorption of a mineral substance and synthesis of vitamins, and is especially suitable for middle aged and elderly people with diseases such as constipation, obesity, hypertension, hyperlipidemia and diabetes mellitus.

The invention discloses a precious metal methanation catalyst prepared by using a solution combustion method, which comprises the following components in percentage by weight: 1-10% of precious metal oxides and 90-99% of a carrier. The precious metal methanation catalyst disclosed by the invention has the advantages that the catalyst is applicable to a trace CO methanation process, and stable in catalytic performance.

The invention discloses a quality improver for recombined products of fine-pointed round-toed crab meat, which consists of the following components in parts by weight: 5-7 parts of trehalose, 5-7 parts of sodium lactate, 0.02-0.03 parts of calcium peroxide, 0.3-0.5 parts of 0.1-0.15 parts of oxidized tea polyphenol modified konjac glucomannan, 0.3-0.5 parts of sucrose ester, 3-5 parts of β-cyclodextrin, and 3-5 parts of corn starch. The quality improver of the recombined product of the fine-pointed round-toed crabmeat of the present invention has a reasonable and scientific formula, simple components, and mutual cooperation among the groups, which can greatly improve the gel performance of the fine-pointed round-toed crabmeat mince and improve the texture properties. The invention also discloses a preparation method for the quality improver of the recombined product of fine-pointed round-toed crabmeat, which has simple process steps, strong operability and low requirements on production equipment.

The present invention provides a non-meat food product with the appearance and texture of cooked meat. A method of preparing such a non-meat food product is also provided. In one embodiment, a method comprises: mixing dry ingredients comprising vegetable protein with wet ingredients comprising water and / or oil to form a non-meat dough; heating the non-meat dough under pressure; maintaining said pressure while transferring the heated non-meat dough to a cooling device; and gradually cooling said heated non-meat dough while gradually reducing the pressure on said heated non-meat dough to form a non-meat dough food product. The mixing may be performed by a batch mixer or a continuous mixer; the heating may be performed by a device selected from a high shear emulsifier, a heat exchanger, and a dielectric heater; and the gradual cooling may be performed by a heat exchanger.

The invention relates to a method for preparing an efficient anthraquinone hydrogenation catalyst by using an FCC dead catalyst. The preparation method comprises the following steps that the FCC deadcatalyst, NaOH and a small amount of water are mixed uniformly and roasted at a certain temperature for some time; the roasted material is ground fully and screened; a certain amount of deionized water is added into the roasted material, and stirring and ageing are carried out for some time with the temperature rising to a certain temperature; after the ageing, stirring and crystallization are carried out for some time with the temperature rising to a certain temperature; after filter, washing and drying, a filter cake, namely, 4A zeolite is obtained; the 4A zeolite is subjected to equivalent-volume impregnation by using an H2PdC14 solution and excessive impregnation by using an NaOH solution, washed, dried and roasted to obtain the catalyst. According to the preparation method, the FCC dead catalyst is taken as a raw material, and the zeolite with high purity is prepared at the lower activation temperature and has the advantages of catalyst activity, high recycling recovery rate of anthraquinone and the like when taken as the barrier of the anthraquinone hydrogenation catalyst.