Abstract: Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from mixtures of olefins and paraffins.

Abstract: A method for preparing cuprous carboxylates (Cu(I) carboxylates) is provided wherein Cu(II) carboxylates are reacted with copper powder in an aromatic solvent under a reducing atmosphere, optionally in the presence of at least one of a carboxylic acid or carboxylic acid anhydride. Also, a method for preparing desired Cu(II) carboxylates is provided wherein a Cu(II) carboxylate having fewer carbon atoms is reacted with a carboxylic acid corresponding to the desired Cu(II) carboxylate. The invention method reactions achieve good conversions with rapid rates of reaction. The Cu(I) carboxylates produced according to the invention method are useful as reagents or in the preparation of olefin complexing reagents.

Abstract: A method for preparing cuprous carboxylates (Cu(I) carboxylates) is provided wherein Cu(II) carboxylates are reacted with copper powder in an aromatic solvent under a reducing atmosphere, optionally in the presence of at least one of a carboxylic acid or carboxylic acid anhydride. Also, a method for preparing desired Cu(II) carboxylates is provided wherein a Cu(II) carboxylate having fewer carbon atoms is reacted with a carboxylic acid corresponding to the desired Cu(II) carboxylate. The invention method reactions achieve good conversions with rapid rates of reaction. The Cu(I) carboxylates produced according to the invention method are useful as reagents or in the preparation of olefin complexing reagents.

Abstract: A method for preparing cuprous carboxylates (Cu(I) carboxylates) is provided wherein Cu(II) carboxylates are reacted with copper powder in an aromatic solvent under a reducing atmosphere, optionally in the presence of at least one of a carboxylic acid or carboxylic acid anhydride. Also, a method for prepared desired Cu(II) carboxylates is provided wherein a Cu(II) carboxylate having fewer carbon atoms is reacted with a carboxylic acid corresponding to the desired Cu(II) carboxylate. The invention method reactions achieve good conversions with rapid rates of reaction. The Cu(I) carboxylates produced according to the invention method are useful as reagents or in the preparation of olefin complexing reagents.

Abstract: Solid waste material which contains arsenic and/or mercury impurities is encapsulated in a cured polysulfide polymer so as to alleviate leaching of arsenic and/or mercury into aqueous liquids. Preferably, the solid waste material is first extracted with an alcohol such as ethanol or, alternatively, treated with an oxidizing agent such as aqueous hydrogen peroxide and then substantially dried before the encapsulation with the polymer is carried out.

Abstract: A novel composition comprising zinc oxide and at least one metal phosphate that can be effectively used to remove sulfur compounds from a fluid stream by contacting said fluid stream under suitable absorption conditions with this novel composition. Also, a novel method is described for making a composition comprising mixing with zinc oxide at least one metal phosphate followed by the addition of a dilute acid to form a paste or paste like material having a desired consistency for agglomeration.

Abstract: Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from mixtures of olefins and paraffins.

Abstract: Olefin complexing reagents comprising Cu(I) carboxylate/BF, adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins are provided.

Abstract: A novel composition comprising zinc oxide and at least one metal phosphate that can be effectively used to remove sulfur compounds from a fluid stream by contacting said fluid stream under suitable absorption conditions with this novel composition. Also, a novel method is described for making a composition comprising mixing with zinc oxide at least one metal phosphate followed by the addition of a dilute acid to form a paste or paste like material having a desired consistency for agglomeration.

Abstract: Olefin complexing reagents comprising Cu(I) carboxylate/BF.sub.3 adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins are provided.

Abstract: Trialkyl arsines (in particular trimethyl arsine) are removed from a fluid (e.g., a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising at least one copper hydrocarbon sulfonate, preferably a copper salt of an aliphatic or aromatic sulfonic acid, or with a copper-exchanged, sulfonated styrene polymer.

Abstract: Trialkyl arsine (in particular trimethyl arsine) is removed from a fluid (e.g., a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising (a) elemental sulfur, and (b) an inorganic support material, preferably alumina and/or silica and/or titania and/or activated carbon.

Abstract: Trialkyl arsine (in particular trimethyl arsine) is removed from a fluid (e.g. a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising (a) a transition metal polysulfide (preferably Fe.sub.2 (S.sub.3).sub.3, and (b) an inorganic support material (preferably alumina).

Abstract: Basic impurities, in particular ammonia, are removed from monoolefin-containing feeds, in particular an isobutylene-containing feed, by contacting with a hydrated acidic clay.

Abstract: A spent butane isomerization catalyst which contains platinum and chlorine on alumina is converted to an active n-pentane isomerization catalyst by processes comprising fluorination (preferably with dissolved HF or NH.sub.4 HF) and calcination (before and/or after the fluorination step). The thus-treated catalysts are used for isomerizing n-pentane to isopentane.

Abstract: Trialky arsine(s) are removed from a fluid (e.g., a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising (a) copper sulfide, preferably copper(I) sulfide, and (b) an inorganic support material, preferably zinc oxide and/or alumina.

Abstract: Trialkyl arsines are removed from fluids, in particular gases, by contacting with a solid sorbent material containing at least one manganese oxide (preferably MnO.sub.2) and at least one Group IB metal oxide (preferably CuO). In a preferred feature, the used solid sorbent material is regenerated by oxidizing treatment, washing with an aqueous liquid, and drying.

Abstract: Trialkyl arsines are removed from fluids, in particular gases, by contacting with a solid sorbent material containing at least one gold component (preferably AuCl and/or AuCl.sub.3 and/or NH.sub.4 AuCl.sub.4) and a support material (preferably alumina and/or silica). This process can be used for colorimetrically detecting the presence of arsines in gases.

Abstract: In a process for isomerizing monoolefins having a terminal double bond (in particular the isomerization of butene-1 to butene-2) in the presence of a Group VIII metal catalyst (in particular an alumina-supported Pd catalyst) which is contaminated by impurities in the monoolefin containing feed, the improvement comprises pretreating the feed with a solid material comprising tin oxide and a refractory support material (in particular alumina).

Abstract: A process for the preferential absorption of H.sub.2 S from a gas which contains H.sub.2 S and CO.sub.2 comprises contacting of the gas with a sorbent solution comprising alkali metal ethylenediaminetetraacetate and/or alkali metal nitrilotriacetate, in the substantial absence of oxidizing agents which can oxidize H.sub.2 S.