Topic
Activated alumina
About: Activated alumina is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 31090 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a flat-plate type solar collector with a dimension of 0.5m×0.5mm was used to heat a generator filled with 100% activated alumina and 75% activated carbon.
53 citations
Patent•
03 Apr 1992
TL;DR: An exhaust gas purifying catalyst for simultaneous removal of carbon monoxide, hydrocarbons and nitrogen oxides from an exhaust gas from an internal-combustion engine, having carried on a monolithic carrier a mixture comprising a catalytically active component comprising 0.5 to 30 g of palladium, 0.1 to 50 l g of an alkaine earth metal oxide, 10 go 150 g of cerium oxide, and 0.
Abstract: An exhaust gas purifying catalyst for simultaneous removal of carbon monoxide, hydrocarbons and nitrogen oxides from an exhaust gas from an internal-combustion engine, having carried on a monolithic carrier a mixture comprising a catalytically active component comprising 0.5 to 30 g of palladium, 0.1 to 50 l g of an alkaine earth metal oxide, 10 go 150 g of cerium oxide, and 0.1 to 50 g of zirconium oxide and 10 to 300 g of an activated alumina.
53 citations
Patent•
23 Feb 1994
TL;DR: A catalyst for the purification of exhaust gas comprises a first coating layer of activated alumina containing at least one of Pt, Pd and Rh, a second coating layer consisting no noble metal and a third layer of zeolite ion exchanged with Cu or Co and develops excellent purification performance in lean-burn atmosphere after engine aging treatment as mentioned in this paper.
Abstract: A catalyst for the purification of exhaust gas comprises a first coating layer of activated alumina containing at least one of Pt, Pd and Rh, a second coating layer of activated alumina containing no noble metal and a third coating layer of zeolite ion-exchanged with Cu or Co and develops excellent purification performance in lean-burn atmosphere after engine aging treatment.
53 citations
Patent•
20 Feb 1991
TL;DR: In this paper, a filter for removing contaminants from a gas contains a support material and a first component which is an oxide, a hydroxide or a mixture of an oxide and hydroxides of Al, Si, Ti, Fe or Zn, containing at least about 0.5% by weight of water.
Abstract: A filter for removing contaminants from a gas contains a support material and, deposited on the support material, a first component which is an oxide, a hydroxide or a mixture of an oxide and hydroxide of Al, Si, Ti, Fe or Zn, containing at least about 0.5% by weight of water. The first component is deposited onto the filter preferably from a colloidal sol solution of a compound of the metal of that component. The first component acts as an adsorbent to remove contaminants from a gas, such as air. The filter may contain a second component, such as an alkali metal, alkaline earth metal, permanganate(s), or a mixture thereof. The filter may also contain a third component, such as an adsorbent, in the form of separate particles, e.g., activated charcoal, potassium permanganate, activated alumina, optionally treated with an alkali metal or alkaline earth metal compound(s), zeolites, and alumino-silicate compositions. The filter is preferably used to remove contaminants from the air in central forced air systems in residential and commercial construction.
53 citations
TL;DR: Point-of-use (POU) treatment devices can be effective for removing inorganic contaminants such as arsenic from drinking water in Alaska and Oregon as mentioned in this paper, where small systems utilizing activated alumina, ion exchange, and reverse osmosis techniques were field tested on waters naturally contaminated with arsenic.
Abstract: Point-of-use (POU) treatment devices can be effective for removing inorganic contaminants. This article describes the investigation of POU treatment systems used for arsenic removal in four homes in Alaska and Oregon. Small systems utilizing activated alumina, ion exchange, and reverse osmosis techniques were field-tested on waters naturally contaminated with arsenic. The waters contained arsenic in concentrations ranging from 0.1 to 1.0 mg/L, which were successfully lowered to below the 0.05mg/L maximum contaminant level.
52 citations