Topic
Activated alumina
About: Activated alumina is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 31090 citations.
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Patent•
01 May 1992
TL;DR: In this article, the authors proposed a honeycomb support of cordierite for a catalytic component to be mounted on a vehicle and the actual wall thickness is 90% or lower than that of the conventional catalyst.
Abstract: PURPOSE:To improve catalytic performance by allowing an oxide as a preliminary processing material to be borne on a thin wall support with a low coefficient of water absorption of a monolithic structure and then further allowing a specified catalytic component to be borne. CONSTITUTION:A specified catalytic component is allowed to be borne after an oxide as a preliminary processing material is allowed to be borne on a thin wall support with a low coefficient of water absorption of a monolithic structure. The oxide with a low coefficient of water absorption of a monolithic structure consists of a fireproof metal oxide with a coefficient of water absorption of 12wt.% or lower. The most favorably used support is a honeycomb support of cordierite. The thin wall design is for reducing a pressure loss when the catalyst is mounted on a vehicle and the actual wall thickness is 90% or lower than that of the conventional catalyst. The preliminary processing material is selected from among activated alumina, activated silica, cerium oxide, ziconium oxide and titanium oxide. The catalytic component is platinum element, activated aluminum or cerium oxide. Thus catalytic performance is enhanced.
4 citations
Patent•
22 Dec 1995
TL;DR: In this article, an adsorbent body having a porous structure for purifying a fluid, wherein the porous structure comprises activated carbon (14), and an inorganic binder for bonding together grains of the activated carbon.
Abstract: of EP0719584An adsorbent body having a porous structure for purifying a fluid, wherein the porous structure comprises activated carbon (14), and an inorganic binder for bonding together grains of the activated carbon. The porous structure optionally comprises activated alumina (18). The adsorbent body is produced by: preparing a raw material composition including a source material which gives activated carbon (14), aluminum hydroxide which gives activated alumina (Al2O3), and an inorganic binder for bonding together grains of the activated carbon and the activated alumina; forming an unfired shaped body of the raw material composition; and firing the unfired shaped body at a predetermined sintering temperature to produce the adsorbent body.
4 citations
Patent•
17 Nov 1951
4 citations
TL;DR: Several 17β-acetoxy-17-substituted steroids undergo deacetoxylation on activated alumina at room temperature to afford olefinic products, whereas the parent carbinols remain unchanged under similar conditions as discussed by the authors.
Abstract: Several 17β-acetoxy-17-substituted steroids undergo deacetoxylation on activated alumina at room temperature to afford olefinic products, whereas the parent carbinols remain unchanged under similar conditions.
4 citations
TL;DR: Of the tested adsorbents, exfoliated graphite is the most effective with a maximum adsorption capacity for petrol hydrocarbons of 3,850 mg g(-1) with the experimental equilibrium data fitted to the Freundlich and Langmuir models.
4 citations