4 results about "Boehmite" patented technology

The invention relates to aluminum phosphate sol and a preparation method thereof. The aluminum phosphate sol contains the following components in percentage by mass: 10%-50% of Al2O3, 0.5%-10% of soluble salt with an anion of C6H7O7<-> or CH2COO<-> or HCOO<-> and 1.5%-15% of P. The preparation method comprises the following steps: (1) stirring pseudo-boehmite, the soluble salt with the anion of C6H7O7<-> or CH2COO<-> or HCOO<-> and deionized water, and standing; and (2) uniformly stirring the slurry obtained in the step (1), and adding phosphoric acid or a mixture of phosphoric acid and phosphate. The aluminum phosphate sol is used for preparing a catalyst, so that the environmental pollution caused by chloride ions and nitrate ion is avoided; the aluminum phosphate sol can be directly used as a bonder of a catalytic cracking catalyst; and the heating is not required during the preparation, a preparation process is simple, high in phosphorus-aluminum ratio, the range is adjustable, and the industrial production is easily realized.

The invention relates to auxiliary agent component-containing boehmite and/or pseudo boehmite, and applications thereof, wherein the mass fraction of the auxiliary agent component is 0.1-10% by adopting the dry basis to calculate and by adopting the auxiliary agent component-containing boehmite and/or pseudo boehmite as the reference, and the auxiliary agent component is one or a plurality of materials selected from group IIIA, group IVA, group VA, group VIIA, group IIA, group IIB, group IIIB, and group IVB. The preparation method comprises: (1) roasting at least an alumina hydrate; (2) mixing the roasted product obtained in the step (1), at least a boehmite and/or pseudo boehmite, an auxiliary agent component-containing compound, and water to obtain a mixture; (3) carrying out a hydrothermal treatment on the mixture obtained in the step (2) in a sealed reactor; and (4) drying the product obtained in the step (3). The auxiliary agent component-containing boehmite and/or pseudo boehmite can be used as the raw material for preparing the formed alumina carrier and the adsorbent.

The invention relates to a filter material used for sewage treatment and particularly relates to a high-efficient composite filter material prepared by blending melt-blown polypropylene with modified pseudo-boehmite and used for sewage treatment and a preparation method thereof. The filter material is prepared from following raw materials, by weight: 1-2 parts of manganese sand in 200-300 meshes, 15-18 parts of micro powder of pseudo-boehmite in 200-300 meshes, 30-35 parts of polypropylene, 1-2 parts of a titanate coupling agent, 0.4-0.5 parts of sodium lignin sulfonate, 1-2 parts of polyether-modified silicone oil, 8-10 parts of nano bamboo charcoal powder, 1-2 parts of yttrium sol being 8-10% in solid content, 0.01-0.02 parts of lanthanum-series rare earth salt and 30-40 parts of water. In the invention, the modified pseudo-boehmite-based composite micro powder is supported onto the modified polypropylene master batch melt-blown filaments to prepare the filter material having a stereoscopic network structure. The filter material is excellent in purification effect, is stable and high-efficient in performances, is changeable in shape, is not liable to damage and can be used repeatedly.