摘要:
A composite metal polybasic salt containing a trivalent metal and magnesium as metal components and having a novel crystal structure, and a method of preparing the same. The invention further deals with a composite metal polybasic salt which has anion-exchanging property, which by itself is useful as an anion-exchanger, capable of introducing anions suited for the use upon anion-exchange, and finds a wide range of applications, and a method of preparing the same. The composite metal polybasic salt has a particular chemical composition and X-ray diffraction peaks, and further has a degree of orientation (I o ) of not smaller than 1.5.
摘要:
A mixture of 100 parts by weight of zeolite powder, 0.1 to 20 parts by weight of β-1,3-glucan, a 1:1 layered clayey mineral, a 2:1 layered clayey mineral and a proper amount of water is kneaded to prepare a plasticizable molding composition of zeolite. The composition is molded by, for example, extrusion into a honeycomb structure and fired to give a fired honeycomb zeolite which is excellent in dimensional accuracy and mechanical strengths and useful as desiccant, catalyst, carrier therefor and so forth.
摘要:
A stabilizing agent for beer comprising a specific amorphous silica composition having a specific surface area of from 100 to 600 m 2 /g, a porous volume of 1 to 2 cc/g, and an aqueous suspension thereof having a pH of from 4 to 6.2 and a zeta-potential of negative polarity, of at least 20 mV is useful in removing haze from beer.
摘要:
Disclosed is a composite adsorbent consisting of a molded body of a homogeneous mixture comprising powdery active carbon and hydrous alumina of the pseudoboehmite type. This composite adsorbent has high mechanical strength and abrasion resistance. This composite adsorbent is excellent in the capacity of adsorbing organic components such as gasoline, and the desorption of the adsorbed components can be easily accomplished at a high desorption ratio. These excellent capacities are retained even if the adsorption-desorption cycle is repeated. Accordingly, this composite adsorbent is especially valuable as the adsorbent for an automobile canister.
摘要:
A hydraulic cement composition useful in, for example, the production of molded structures and the treatment of industrial wastes, comprises (A) (i) a water-soluble alkali metal borosilicate or (ii) a water-soluble alkali metal silicate and an alkali metal borate soluble in an alkaline aqueous solution, (B) silicon polyphosphate, (C) an alkali metal silicofluoride and (D) substantially amorphous barium silicate in which the BaO/ SiO 2 molar ratio is from 1/2.5 to 1/6.