Abstract:
The present invention relates to modified catalyst supports, to processes for making modified catalyst supports, and to chemical processes employing catalysts that comprise such modified catalyst supports. The modified catalyst support comprises a first metal, a second metal and a support modifier on a support, wherein the support modifier comprises a support modifier metal selected from the group consisting of tungsten, molybdenum, vanadium, niobium, and tantalum.
Abstract:
The present invention provides an adsorbent for removing sulfur from cracking gasoline or diesel fuel. The adsorbent has excellent abrasion-resistance and desulfurization activity. The adsorbent comprises from about 5 to about 35 wt % of alumina, from about 3 to about 30 wt % of silica, from about 10 to about 80 wt % of at least one oxide of metal selected from Groups IIB and VB, from about 3 to about 30 wt % of at least one metal accelerant selected from Groups VIIB and VIII, and from about 0.5 to about 10 wt % of at least one oxide of metal selected from Groups IA and IIA, based on the total weight of the adsorbent.
Abstract:
A waste form for and a method of rendering hazardous materials less dangerous is disclosed that includes fixing the hazardous material in nanopores of a nanoporous material, reacting the trapped hazardous material to render it less volatile/soluble, and vitrifying the nanoporous material containing the less volatile/soluble hazardous material.
Abstract:
The invention is directed to shaped composite adsorbent material, comprising particulate activated carbon material, bound by a suitable binder, preferably selected from the group of sodium alginate calcium alginate, chitosan, polyacrylamide, polyethylene oxide and mixtures thereof, more in particular a combination of chitosan and alginate, whereby the activation of the carbon material has taken place before binding the material.
Abstract:
Superabsorbents comprising pyrogenic aluminum oxide exhibit a low caking tendency coupled with good absorption properties and rapid water absorption.
Abstract:
A sorbent, suitable for removing heavy metals, including mercury, from fluids containing hydrogen and/or carbon monoxide at temperatures up to 550° C., in the form of a shaped unit comprising one or more mixed-valency metal sulphides of vanadium, chromium, manganese, iron, cobalt or nickel.
Abstract:
An improved adsorbent useful in removing contaminants from various hydrocarbon streams comprises a zeolite, an alumina and an added metal component provided in the adsorbent by initially contacting primarily the zeolite with the added metal. In a specific application, an adsorbent comprising sodium-impregnated zeolite Y and alumina is used to purify an ethylene stream in order to remove CO2, H2S, methanol, and other S- and O-containing compounds.
Abstract:
An odor filtration media having a chemical reagent which removes odor causing fluid contaminants from a fluid stream through the use of granular or shaped media have a chemical composition including permanganate is provided. A method of producing the odor absorbing media having a chemical reagent is also provided and comprises the steps of mixing H2O, KMnO4, and at least one salt adding ions or ionic compounds selected from the group consisting of Na+, Li+, K+, NH4+, Cl−, SO42−, BO32−, CO32−, PO43−, NO3− and combinations thereof, or from the group consisting of Na+, Li+, K+, NH4+, Mg2+, Ca2+, Cl−, BO32−, NO3− and combinations thereof, forming an impregnating solution. The impregnating solution is heated and combined with a support material to form a coherent mass.
Abstract:
Disclosed are porous-shell particles, methods of making the particles, and uses thereof. In one aspect, the porous-shell particles are superficially porous particles.