71 results about "Strontium phosphate" patented technology

The present invention is intended to provide a catalyst which is for synthesizing butanol from ethanol at a high selectivity and which comprises strontium phosphate apatite having the Sr / P atomic ratio of 1.5-2.0, and the synthesis method.

The invention discloses a high tensile degradable strontium phosphate calcium composite bone cement for repairing or intensifying fixation of human body holding bone defect and preparation method thereof. The solid material of bone cement is mixed powder of Ca4(PO4)2O ceramic with high crystallinity, SrHPO4, CaHPO4, curing liquid is thin phosphoric acid water solution, additive plasticizing unit is biocompatibility degradable macomolecule fiber with high tensile strength, selecting from lactic acid - hydroxyacetic acid copolymer fibre, polylatic acid fiber or polyglycolic acid fiber or other absorbable surgical suture, the enhancing unit is Ca4(PO4)2O residual ceramic particles after curing reaction. The preparation method coalesces kinds of techniques of ceramic particles in-situ reinforcing, initial plasticizing and later stage degradation of degradable fiber, Sr modification to get a novel high tensile degradable strontium phosphate calcium composite bone cement in like physiologicenvironment. The material has good biocompatibility, bioactivity, bone conductivity and degradation property.

The invention discloses a method for hydrothermally synthesizing a yttrium phosphate nanosphere by using rich CO2. The method is characterized by comprising the following steps: respectively preparing a Y<3+> salt solution and a PO4<3+> salt solution at room temperature; adding the two solutions to a reaction kettle at a volume ratio of 1:1, stirring at the same time, and continuously stirring for 30 minutes to 1 hour; introducing CO2 gas or adding dry ice to the reaction kettle, controlling the pressure inside the reaction kettle to 1-10 Mpa, and sealing the high-pressure reaction kettle; heating the high-pressure reaction kettle, determining reaction temperature of 100-200 DEG C and duration time of 12 hours to 2 days, and then naturally cooling the high-pressure reaction kettle to room temperature; filtering a reacted product, and successively washing and centrifugalizing twice by using deionized water and absolute ethyl alcohol; and drying the washed and centrifugalized product at 50-100 DEG C for more than 6 hours to obtain a final pure product.

The invention relates to preparation and novel photocatalysis application of an antimony phosphate nano superstructure. The preparation comprises the following steps: sequentially dissolving diethylenetriamine pentaacetic acid and antimony trichloride into de-ionized water and sufficiently stirring under a 60 DEG C water bath condition; then adding ammonium dihydrogen phosphate and sufficiently stirring to form a precursor mixed solution; filtering the precursor mixed solution to obtain a precursor solution and precursor sediment; standing the precursor solution in a 60 DEG C water bath for 10min to 20min to form a suspension system; pouring suspended clarified liquid at an upper part of the suspension system and all the precursor sediment into a stainless steel hydrothermal reaction kettle with a polytetrafluoroethylene lining and carrying out a constant-temperature hydrothermal reaction at 160 DEG C for 10h; centrifuging, washing and drying to obtain a product. The preparation method of the antimony phosphate nano superstructure is simple and prepared antimony phosphate has relatively good photocatalytic activity; types of photocatalysts, shape types of the antimony phosphate and preparation methods are expanded.