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35 results about "Age specific" patented technology

Alumina composite oxide and preparation method thereof

The invention discloses an alumina composite oxide and a preparation method thereof. The alumina composite oxide comprises, by weight, the chemical components of 1 to 15 parts of cerium-zirconium mixture, 70 to 95 parts of alumina, 3 parts of lanthana and 1 to 15 parts oxide of metallic elements in the third period and the fourth period of periodic table of chemical element except aluminum. The high temperature and aging resisting performance of the alumina is improved greatly by adulterating rear earth and oxide of transition metal. According to the preparation method of the alumina composite oxide, the alumina composite oxide is effectively prevented from drying and hard aggregating through an aging reaction and microwave drying under the condition that a surface active agent is not used, so that the dispersity of powder particles is improved; no organic waste gas is generated in the calcinating process, being environmentally friendly is achieved, and grinding is not needed for a finished product after calcinating is conducted; the specific area of the produced material is large by controlling proper temperature in the calcinating process; calcinating is conducted for 4 to 8 h at the temperature of 700 to 850 DEG C, the specific area is 230 to 260 m2/g, and the aging specific area is 100 to 130 m2/g after aging is conducted for 10 h at the temperature of 1000 DEG C; the production technology is simple, controlling the process is easy, the price of raw materials is cheap, the production cost is low, and industrial production is easy to achieve.
Owner:CHINA COAL TECH ENG GRP CHONGQING RES INST

Precipitation method of titanium dioxide for selective oxidative desulfurization catalyst

The invention belongs to the technical field of catalytic chemistry and environmental protection, and particularly relates to a precipitation method of titanium dioxide for a selective oxidative desulfurization catalyst. The titanium dioxide for the selective oxidative desulfurization catalyst is prepared according to the following sequential steps: preparing hydrolyzed seed crystals, hydrolyzingtitanium liquid, washing metatitanic acid by using water, slurrying the metatitanic acid and adding silicon, neutralizing by using ammonia water, filtering and washing, and calcinating and crushing. The selective oxidative desulfurization catalyst prepared from the TiO2 powder can be used at relatively high reaction temperature, so that the adaptive range of the catalytic reaction temperature is widened, and the catalyst can be used in the temperature range of 200-400 DEG C; the TiO2 powder has the specific surface area being larger than 300m<2>/g, so that the prepared catalyst has a large surface area and the reaction activation center of the catalyst is increased; the aging specific surface area of the TiO2 powder is kept good, and after aging at 300 DEG C for 12h, the specific surface area is basically unchanged and the structure is stable, so that the selective oxidative desulfurization catalyst has a long using period.
Owner:SHANDONG DONGJIA GRP CO LTD

Digitalized pulse diagnosis-based quantification method for on-line monitoring and evaluation of human body qi-blood aging

The invention discloses a digitalized pulse diagnosis-based quantification method for on-line monitoring and evaluation of human body qi-blood aging, which is characterized by comprising the following steps of: linking an IC card and a display screen, collecting the left Guan pulse wave and the blood pressure information of a human body, carrying out A/D (Analog/Digital) conversion into a data flow, linking to a computer or an internet through a USB (Universal Serial Bus) for data processing, monitoring the cardiovascular dynamic state of the human body on line, then carrying out the intelligent assessment and evaluation on qi-blood aging through a computer program or an embedded human body qi-blood aging specific index assessing and evaluating system, and providing on-line remote detection and diagnosis, health care consultation and anti-aging medical service for users. Compared with the prior art, the invention for detecting the human body qi-blood aging by using cardiovascular dynamic parameters has the advantages of no wound, no damage, objectification, quantization, intellectualization, computerization or networking, is applicable to the consultative service and the quantitative study of individualized health care of old people, preventive treatment of diseases, syndrome differentiation and treatment of chronic diseases, critical disease monitoring and rehabilitation evidence-based monitoring.
Owner:肖行贯

Rare earth and zirconium doped cerium dioxide and preparation method thereof

The invention belongs to the technical field of a catalyst material, and particularly relates to rare earth and zirconium doped cerium dioxide and a preparation method thereof. The rare earth and zirconium doped cerium dioxide is prepared from the following chemical ingredients in percentage by weight: 50 to 95 percent of cerium oxide, 5 to 40 percent of rare earth oxide and 0 to 10 percent of zirconium oxide, wherein a rare earth element is one or combination of serval kinds of elements from La, Pr, Nd or Y. The invention also provides the preparation method of the rare earth and zirconium doped cerium dioxide; after precipitating agents are added into cerium material liquid for precipitation; dispersing agents are added; water washing is performed until the electrical conductivity is smaller than 5ms/cm; firing is performed to obtain cerium oxide powder; rare earth material liquid, zirconium material liquid and cerium oxide powder are mixed; then, drying and firing are performed to obtain oxide powder. By a doping method, the surface property of oxide is changed; the flowability of lattice oxygen is improved; the aging specific surface is high; in the use process, sintering agglomeration cannot easily occur; the oxidation reduction capability of a cerium oxide based compound is greatly improved; the preparation method is scientific, reasonable and simple and is easy to implement.
Owner:淄博加华新材料有限公司
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