CAS: 13517-24-3; Sodium Metasilicate Nonahydrate

专利信息

专利号:US-6596256-B1
优先权日:2000-08-28
标 题:Synthesis of low silicon sodium X zeolite
发明人：OJO ADEOLA F; FITCH FRANK R; BUELOW MARTIN; GITTLEMAN CRAIG S; JALE SUDHAKAR R
权利人:BOC GROUP INC
摘要:Low silicon sodium X zeolite containing little or no sodium A zeolite as by-product, is prepared by direct synthesis from sodium ion-containing hydrogels, the crystallization step being carried out by maintaining the hydrogels at a temperature below about 70° C., and preferably in the range of about 50 to about 70° C. for the duration of the crystallization step. Preferably, the ratios of components in the solutions used to make the hydrogel are such that in the hydrogel the silica/alumina molar ratio will be in the range of about 2.25:1 to about 2.4:1; the sodium oxide to silica molar ratio will be in the range 1.6:1 to about 1.9:1; and the water to sodium oxide molar ratio will be greater than about 60:1.

专利号:WO-2025035517-A1
优先权日:2023-08-14
标题:Method for growing molecular sieve membrane in kettle-free normal-pressure system
发明人：YU JIHONG; Chi Xiwen; YIN XIN; JIN ZIYUE; LI SHANGHUA; LI MALIN
权利人:UNIV JILIN
摘要:The present invention relates to the technical field of the preparation of molecular sieve membranes. Provided is a method for growing a molecular sieve membrane in a kettle-free normal-pressure system. The method provided by the present invention can implement the synthesis of a molecular sieve membrane in a kettle-free normal-pressure system, and can grow a molecular sieve membrane of any size and any thickness by utilizing a small amount of a mother liquor; and the molecular sieve membrane can be synthesized at a relatively low temperature, or even at room temperature, and is applicable to a wide variety of substrates. In the present invention, by introducing free radicals into a reaction system, the crystallization of a molecular sieve can be accelerated, thereby promoting the growth of a molecular sieve membrane, and a high-quality molecular sieve membrane is thus rapidly obtained. By means of the present invention, a molecular sieve membrane can be grown on a variety of substrates on which molecular sieve membranes cannot be grown by means of conventional methods and which are not heat-resistant and have poor stability; therefore, the method can effectively expand the application range of molecular sieve membranes, and has important value in the practical application of molecular sieve membranes in many fields such as energy storage, medicine, information and petrochemical industry.

专利号:CN-111634923-B
优先权日:2020-05-15
标题 :Synthesis of FER Molecular Sieves Using Alcohols as Organic Templates

专利号:WO-2010036214-A1
优先权日:2008-09-26
标题 :Process for preparation of medical grade polyurethane composites containing antibacterial zeolite
发明人：HASIRCI NESRIN; BAC NURCAN; KAMISOGLU KUBRA; AKATA KURC BURCU; AKSOY EDA AYSE
权利人:HASIRCI NESRIN; BAC NURCAN; KAMISOGLU KUBRA; AKATA KURC BURCU; AKSOY EDA AYSE
摘要:This invention is related to the preparation processes and the products of polymeric composites containing antibacterial properties. The composites were prepared from the medical grade polyurethanes and silver ion containing zeolites which the synthesis procedures of both are also included in this invention. Zeolite crystals were prepared in various forms as micro and nano particules and at different SiO2/Al2O3 ratios. Antibacterial properties were included with addition of silver ions into zeolite particules. Medical grade polyurethanes were synthesized from their components in the presence of no other additives in various forms as films sponges or fibers. Composites were formed with combination of these two components. The prepared antibacterial composite materials can be applied in textiles, paint industry, coating materials for metals ceramics or wood, public toilets, keyboards, paper industry, household hygene items, cosmetics, hospital beds and floors, etc.

专利号:CN-110372001-A
优先权日:2019-07-16
标 题:Template-free secondary synthesis of highly b-axis-oriented all-silicon MFI molecular sieve membrane preparation method

专利号:CN-110368935-B
优先权日:2019-07-29
标 题 :A Cu-Ti-Si catalyst for the synthesis of 1,4-butynediol