Abstract:
Alkenes and/or alkadienes are contacted with molecular oxygen and an oxidative dehydrogenation catalyst consisting essentially of phosphorus, molybdenum, cobalt and oxygen, wherein the atom ratio of phosphorus to molybdenum is in the range of about 0.5:1 to about 5:1 and the atom ratio of cobalt to molybdenum is in the range of about 0.1:1 to about 3:1, to produce furan compounds.
Abstract:
Organic compounds are dehydrogenated to compounds having a higher degree of unsaturation by contacting the feedstock in the vapor phase at an elevated temperature in the presence of an oxygen-containing gas with a calcined catalyst containing a ferrous group metal, e.g., nickel, in combination with phosphorus, at least one Group IIa metal and oxygen. Representative of such conversions is the oxidative dehydrogenation of butane to 1,3-butadiene. The conversion products are valuable compounds particularly useful as intermediates for the preparation of polymeric materials such as synthetic rubbers and the like.
Abstract:
Organic compounds, particularly hydrocarbons, are oxidatively dehydrogenated to more unsaturated compounds by contact, under reactions conditions, with air, steam and a calcined solid catalyst composition comprising tungsten, tin and at least one metal of the iron subgroup of Group VIII. In one embodiment, isopentene is converted to isoprene over a nickel/tungsten/tin/oxygen catalyst at a conversion of 36 percent and with a modivity (modified selectivity) of 72 percent.
Abstract:
1. A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A CALCINED ADMIXTURE OF (I) COBALT OXIDE, COMPOUND OF COBALT CONVERTIBLE TO THE OXIDE ON DRYING OF CALCINING, OR THE SULFATE, (II) TIN OXIDE, COMPOUND OF TIN CONVERTIBLE TO THE OXIDE ON DRYING OR CALCINATION, OR SULFATE, AND (III) A GROUP IIA METAL OXIDE, COMPOUND CONVERTIBLE TO A GROUP IIA OXIDE ON CALCINATION, OR SULFATE, SUCH THAT IN SAID CALCINED COMPOSITION OF MATTER COBALT REPRESENTS ABOUT 10 TO 75 WEIGHT PERCENT, TIN REPRESENTS ABOUT 1 TO 50 WEIGHT PERCENT, AND GROUP IIA METAL REPRESENTS ABOUT 0.5 TO 60 WEIGHT PERCENT. 4. THE CATALYST COMPOSITION ACCORDING TO CLAIM 1 WHEREIN FURTHER IS INCLUDED IN SAID CATALYST COMPOSITION A SUPPORT, AND SAID SUPPORT IS ONE OR MORE OF SILICA, BORIA, TITANIA, AND ZIRCO-NIA.
Abstract:
Compositions prepared from (I) a transition metal compound of the iron group, (II) a Group IIA metal-containing compound, and (III) Group VIA element-containing compound, are effective in a process to convert paraffins or monoolefins to a greater degree of unsaturation.