摘要:
In one aspect, composite particles are described herein. A composite particle comprises a substrate, composite metallic or metal oxide nanoparticles supported by the substrate and an amphiphilic or hydrophilic component associated with the substrate, wherein the composite metallic or metal oxide nanoparticles comprise iron and at least one additional transition metal.
摘要:
Masse de captation de métaux lourds, en particulier de mercure, contenus dans une charge gazeuse ou liquide, ladite masse comprenant : - une phase active sous la forme d'une phase cristalline, ladite phase active comprenant au moins un sulfure métallique à base d'un métal M choisi dans le groupe constitué par le cuivre (Cu), le chrome (Cr), le manganèse (Mn), le fer (Fe), le cobalt (Co), et le nickel (Ni); - un support amorphe comprenant un matériau à base d'aluminium.
摘要:
Described herein is a graphene oxide based moisture adsorbing device that provides an enhanced ability to adsorb water vapor over that of traditional desiccants. A first form comprises an external drying device for drying something outside of a containment structure, which is permeable to water vapour. A second form comprises a dry enclosure device for drying something that is inside of the containment structure, which comprises a moisture barrier.
摘要:
Methods for a facile, template free and one-step synthesis of nanoporous carbons by using a heterocyclic aromatic organic compound as a single source precursor of both carbon and nitrogen are described. The heterocyclic aromatic organic compound contains nitrogen in pyrrolic and/or pyridinic positions and is chemically activated with NaOH, KOH or ZnCl2 at high temperatures in a solid state mixture as a synthesis protocol to promote fine micropores during carbonization. Nanoporous carbons synthesized by these methods that have superior gas sorption/storage and energy storage properties are also described. The nanoporous carbons are useful as carbon sequestration agents and supercapacitors.
摘要:
The present invention relates to a carbon sorbent the can selectively remove platinum-group metals and other heavy metals such as tin without co-removing organic synthesis products including pharmaceutical intermediates and finished Active Pharmaceutical Ingredients (APIs). The carbon sorbents of the present invention are made from low-cost, high purity starting materials and the resulting carbon sorbents are also very pure. The carbon sorbents possess a combination of certain nitrogen and phosphorous groups combined with mesoporosity (2 to 50 nm diameter pores) that proves the high metal adsorption.
摘要:
A carbohydrate carbon pyrolyzate material is described, having utility as an adsorbent as well as for energy storage and other applications. The carbohydrate carbon pyrolyzate material includes microporous carbon derived from carbohydrate precursor material. In adsorbent applications, the carbohydrate carbon pyrolyzate may for example be produced in a particulate form or a monolithic form, having high density and high pore volume to maximize volumetric gas capacity, with the pore size distribution of the carbon pyrolyzate adsorbent being tunable via activation conditions to optimize adsorptive capacity and selectivity for specific gases of interest.
摘要:
An adsorbent composition having a bismuth material on a support containing at least one of a metal oxide, a metalloid oxide or an activated carbon and methods of making and using the same. The adsorbent composition is useful for adsorbing arsine from a fluid stream.
摘要:
La présente invention a pour objet l'utilisation d'un matériau organosilicique, poreux ou non poreux, pour éliminer d'une solution aqueuse les radionucléides, les anions minéraux, les entités moléculaires anioniques et les colorants ou principes actifs chargés négativement, caractérisée en ce que la structure dudit matériau organosilicique est formée de motifs de répétition, chaque motif de répétition comprenant au moins une entité chargée positivement choisie parmi une entité ammonium, une entité imidazolium, une entité guanidinium, une entité pyridinium et une entité phosphonium et étant incorporé dans un réseau silicique par au moins deux liaisons silicium-carbone. Elle concerne également un matériau organosilicique particulier nouveau, comprenant au moins un groupe benzyle, un groupe 4-phénylbenzyle ou un groupe styrène dans chaque motif de répétition.