摘要:
Process for producing carbon molecular sieves for separating oxygen and nitrogen by treating a carbonaceous product with inert gas and steam in a vibrating oven and further treating said product with benzene at a high temperature in a vibrating oven to thereby narrow the existing pores.
摘要:
A process for manufacturing molecular sieving carbon is disclosed, wherein pelletized charcoal made of coconut shell charcoal powder and coal tar is washed with dilute mineral acid solution, then a specified amount of coal tar is added, penetrated therein, followed by heat treatment under a particular range of temperature, and cooling in inert gas.
摘要:
Granular molecular sieve may be obtained, without necessitating any activng treatment, by subjecting a vinylidene chloride copolymer to a thermal carbonization treatment for removal of hydrochloric acid, pulverizing the resultant product to a grain size smaller than 100 mesh size, adding 15 to 35 parts by weight of a carbonaceous sintering agent and 8 to 15 parts by weight of an organic pelletizer capable of gas generation by heating to 100 parts by weight of the pulverized product, pelletizing the resultant mixture and carbonizing the resultant pellets at a temperature of 400 to 900.degree. C for a period of 2 to 6 hours. The pore diameter of this molecular sieve can be suitably controlled within a range of from 5 to 10 A by appropriately selecting the sintering agent and pelletizer employed and the conditions of the thermal treatment.
摘要翻译:可以通过使偏二氯乙烯共聚物进行热碳化处理除去盐酸,将所得产物粉碎成小于100目尺寸的粒度,加入15〜35份的方法,得到粒状分子筛,而不需要任何活化处理 碳质烧结剂的重量和8〜15重量份能够通过加热至100重量份粉碎产物而产生气体的有机造粒机,造粒所得混合物并在400-900℃的温度下碳化所得颗粒。 C 2至6小时。 通过适当选择所使用的烧结剂和造粒机以及热处理条件,可以将该分子筛的孔径适当地控制在5〜10A的范围内。
摘要:
Process for preparing carbon-containing molecular sieves adapted for separating small molecular gases, in particular oxygen, from nitrogen, which comprises treating coke having a content of volatile components of up to 5% at 600.degree. - 900.degree. C with a hydrocarbon which splits off carbon whereby the split-off carbon is deposited in the carbon framework of the coke thereby narrowing the existing pores.
摘要:
A series of fast acting activated carbons is made having high surface areas and at the same time very small pore size. The method of manufacturing them, which specifies certain carbonaceous starting materials and pulverizing, agglomerating, crushing and oxidizing steps, determines or controls the pore sizes and surface areas. My activated carbon has highly uniform, very small pore sizes and at the same time a large surface area per unit of weight and a large macropore volume. New methods of separating mixtures of compounds, such as mixtures of hydrocarbons, are disclosed employing my new molecular sieve activated carbon. In my fast-adsorbing molecular sieve, molecules of generally lower molecular weight are adsorbed by the carbon rather than the usual case for activated carbon, which is that the carbon tends to adsorb generally larger molecules in preference to smaller ones.
摘要:
This invention provides a process for preparing active carbon, characterized by activating meso-carbon microbeads derived from coal-type pitch and the active carbon prepared by the process.
摘要:
An adsorptive separation process for separating sterols from a tall oil feed mixture, which process comprises contacting the feed mixture with an adsorbent comprising an activated-type carbon sieve having a pore diameter of 15-20 .ANG. and a surface area of 300-1500 m.sup.2 /g, selectively adsorbing substantially all of the sterols to be separated on the adsorbent and thereafter recovering high purity sterols. A desorption step is used to desorb the adsorbed sterols with an aromatic liquid, e.g., chlorobenzene.
摘要:
A method is disclosed for the adsorptive removal of H.sub.2 S from gas mixtures in C-containing adsorption agents with 1-80 bar pressures and regeneration, employing pressure lowering and/or temperature change and simultaneous rinsing with an at most negligibly absorbable component of the gas mixture. A carbon molecular sieve of fossil and/or bituminous fuel is used, with for pore diameter less than 10 nm a pore volume of 15-25 cm.sup.3 /100 g, and micropore volume in pore diameter range 0.35-10 nm less than 10 cm.sup.3 /100 g. The inner surface of the molecular screen can be freed of surface groups capable of reacting with the H.sub.2 S by aftertreatment with reducing gas.
摘要:
Porous coke is impregnated with an organic compound which remains in the pores thereby causing a reduction in the effective size of the same. This results in molecular sieve coke capable of separating different gases, particularly oxygen and nitrogen, and capable of adsorbing smaller gas molecules more rapidly than larger gas molecules. The organic compound has a boiling point of at least 200.degree.C as measured at atmospheric pressure and of no more than 450.degree.C as measured in vacuum.
摘要:
A precursor composition is provided, including a templating component having a block copolymer, a phenolic compound, a cross-linkable aldehyde component, and a graphitizing agent including a polyaromatic hydrocarbon (PAH). The precursor composition is polymerized to form a polymerized carbonization precursor. The polymerized carbonization precursor is carbonized to form a mesoporous carbon material.