53results about How to "Change acidity" patented technology

The invention relates to a spherical heteroatom Ni-SAPO-34 molecular sieve, and a preparation method and an application thereof. The preparation method comprises the following synthesis steps: (1) dissolving nickel nitrate hexahydrate in deionized water, and dropwise adding a chelating agent at room temperature while stirring to obtain a Ni chelate solution A; (2) mixing an aluminum source, a phosphorous source, a silicon source, a template and deionized water, and heating and stirring the obtained mixture to obtain an initial sol B; (3) adding the solution A to the initial sol B, and heating and stirring the solution A and the initial sol B to obtain a sol C; and (4) filling a reaction kettle with the sol C, carrying out a crystallization reaction, filtering and washing a product obtained after the reaction is completed until the product is neutral, and drying, calcining and cooling the neutral product to obtain the spherical heteroatom Ni-SAPO-34 molecular sieve. The spherical heteroatom Ni-SAPO-34 molecular sieve with a high crystallinity is synthesized by a sol-hydrothermal synthesis technology, the pressure drop of an accumulated catalyst bed is effectively reduced, the introduction of metallic nickel provides many active sites for the reaction, and the molecular sieve has an important application in an NH3-SCR reaction. The synthesis method has the advantages of simple steps, and easiness in operation.

The invention relates to a porous silicon-containing alumina carrier and a preparation method thereof. The pore volume of the carrier is 0.55-0.68ml / g, the average pore diameter is 6.5-9.5nm, and the specific surface area is 270-320m 2 / g, the bulk density is 0.58-0.68g / ml, and the silicon content is 0.5-10.0% in silicon dioxide. The preparation method of the silicon-containing alumina carrier of the present invention is that in the process of mixing aluminum hydroxide or aluminum oxide with deionized water or aqueous solution, adding a highly dispersible nano-silicon-containing compound such as nano-silicon dioxide, and kneading to form a plastic body, and then shaped, dried, and calcined to prepare the catalyst carrier. The alumina carrier prepared by the method of the present invention overcomes the disadvantages of uneven distribution of auxiliary silicon in the prior art and the existence of influence on the structure of alumina in the bulk phase, and is used for the preparation of heavy oil, especially heavy distillate oil for hydrogenation pretreatment Catalyst with excellent physical and chemical properties and performance.

The invention discloses physiotherapy health care clothes. The clothes are made of fabrics made of anion granular materials capable of generating the microcurrent; the anion granular materials capable of generating the microcurrent comprise, by weight, 25%-30% of aluminum oxide, 0.2%-0.5% of organic germanium powder, 2% of sapphire powder, 25%-35% of silicon dioxide, 5%-10% of magnesium oxide, 10%-15% of boron trioxide, 8%-15% of iron trioxide, 0.5%-1.5% of sodium oxide, 0.1%-0.5% of phosphorus pentoxide, 0.2%-0.5% of titanium dioxide, 8% of iron oxide, 2% of calcium oxide, 2% of periclase and 5% of activated carbon. When the physiotherapy health care clothes are wore for a long time, the morbidity of breast diseases of women can be effectively reduced; meanwhile, the physiotherapy health care clothes have the obvious effects on improving microcirculation, relieving soft tissue pains and strengthening the organism immune function.

The invention discloses spiral seaweed feed for crabs, which is characterized by being prepared from the following raw materials in parts by weight: 25-30 parts of bean cake, 20-25 parts of millet, 18-24 parts of spiral seaweed, 14-18 parts of asparagus, 19-23 parts of dried jellyfish slices, 16-19 parts of clam meat, 15-17 parts of black carp, 0.04-0.08 part of riboflavin, 0.05-0.09 part of yeast powder, 13-17 parts of soyabean protein peptide, 2-5 parts of oyster sauce, 7-9 parts of soybean oil, 21-26 parts of apple, 17-25 parts of aloe, 4-7 parts of calcium lactate, 0.1-0.3 part of caulis spatholobi, 0.2-0.4 part of oldenlandia diffusa, 1-3 parts of houttuynia cordata, 3-6 parts of a phagostimulant and a defined amount of water. According to the feed provided by the invention, as spiral seaweed which is rich in nutrition is added into the feed for crabs, nutrition can be supplemented to the crabs, the growth speed of the crabs is increased, the quality and taste of the crabs are improved, the acidic physique can be changed and the metabolism activity is adjusted, and after long-term eating of the crabs bred by adopting the product, the human-body blood glucose can be adjusted, and a remarkable effect is achieved on stability in state of the diabetes.

The invention discloses a method for synthesizing piperazine and derivatives of the piperazine through monoethanolamine gas-solid phase catalysis. According to the method, monoethanolamine is used as raw materials; acid activated montmorillonite or acid activated imvite loaded with phosphate is used as a catalyst; piperazine, triethylene diamine, N-ethylpiperazine and 2-ethylpiperazine are synthesized at ordinary pressure at 250 to 350 DEG C. The method is simple; the conditions are controllable; the used catalyst is low in cost and can be easily obtained; the catalytic activity is high; the stability is good; the conversion rate of monoethanolamine can reach higher than 99 percent; in addition, the piperazine, the triethylene diamine, the N-ethylpiperazine and the 2-ethylpiperazine with higher yield and high value can be obtained.