The present invention addresses to a method of preparing steam reforming catalysts, of the eggshell type, using a solution of glycerin, in polar solvent, preferably water, to occupy the pores of a support. Next, the solvent is removed and the support is impregnated with a nickel salt solution, which may contain promoters such as rare earths. The steps can be repeated until the desired content of the active phase and promoters is reached.

The present invention addresses to a method of preparing steam reforming catalysts, of the eggshell type, using a solution of glycerin, in polar solvent, preferably water, to occupy the pores of a support. Next, the solvent is removed and the support is impregnated with a nickel salt solution, which may contain promoters such as rare earths. The steps can be repeated until the desired content of the active phase and promoters is reached.

The present invention provides a catalyst comprising a transition metal, an inorganic support, a zeolite, and a layered double hydroxide. Using of the catalyst according to the present invention in an olefin production process exhibits high activity and high selectivity with decreased deactivation rate, therefore longer reaction cycle can be performed and catalyst life is prolonged.

The present invention relates to a catalyst system for olefin metathesis, the catalyst system comprising: a) a first system zone substantially comprising a layered double hydroxide; and b) a second system zone comprising a metathesis catalyst.

The present invention relates to a catalyst system for olefin metathesis, the catalyst system comprising: a) a first system zone substantially comprising a layered double hydroxide; and b) a second system zone comprising a metathesis catalyst.

An apparatus includes a substrate having a surface and a transparent photocatalyst coating secured on the surface of the substrate, wherein the transparent photocatalyst coating includes titanium oxide and a component selected from a fluorescent dye, ultra-fine glitter, indium tin oxide, aluminum zinc oxide, silver nitrate, and combinations thereof. The substrate is preferably selected from an appliance handle, doorknob, switch, keyboard, countertop, appliance handle, equipment button, touchscreen, handrail, light emitting device, and light cover. Such substrates are frequently touched by one or more users and may become contaminated. However, the transparent photocatalyst coating may be self-decontaminating.

An apparatus includes a substrate having a surface and a transparent photocatalyst coating secured on the surface of the substrate, wherein the transparent photocatalyst coating includes titanium oxide and a component selected from a fluorescent dye, ultra-fine glitter, indium tin oxide, aluminum zinc oxide, silver nitrate, and combinations thereof. The substrate is preferably selected from an appliance handle, doorknob, switch, keyboard, countertop, appliance handle, equipment button, touchscreen, handrail, light emitting device, and light cover. Such substrates are frequently touched by one or more users and may become contaminated. However, the transparent photocatalyst coating may be self-decontaminating.

A visible light sensitive photocatalyst including a compound represented by Formula 1:
A.sub.a-xM.sup.1.sub.xSi.sub.b-yM.sup.2.sub.yO.sub.c  Formula 1
wherein A is one or more metals selected from Ag, Cu, and Au; M.sup.1 is one or more metals selected from Li, Na, K, Rb, and Cs; M.sup.2 is one or more metals selected from Ge, Sn, Ti, Zr, and Hf, and 1.7≦a≦2.3, 0.7≦b≦1.3, 2.7≦c≦3.3, 0≦x<a, and 0≦y<b.

A visible light sensitive photocatalyst including a compound represented by Formula 1:
A.sub.a-xM.sup.1.sub.xSi.sub.b-yM.sup.2.sub.yO.sub.c  Formula 1
wherein A is one or more metals selected from Ag, Cu, and Au; M.sup.1 is one or more metals selected from Li, Na, K, Rb, and Cs; M.sup.2 is one or more metals selected from Ge, Sn, Ti, Zr, and Hf, and 1.7≦a≦2.3, 0.7≦b≦1.3, 2.7≦c≦3.3, 0≦x<a, and 0≦y<b.

An oxide of sulfur oxygen transfer reagent is provided. A method of producing olefins from hydrocarbons with a concomitant production of water (oxidative dehydrogenation), using the oxide of sulfur oxygen transfer reagent is also provided. The sulfur oxygen transfer reagent can be used as an oxygen transfer reagent, and therefore acts as a non-metal carrier, for oxygen in a redox looping reactor for an oxidative dehydrogenation process such as the conversion of ethane to ethylene. The reduced forms of oxides of sulfur, formed in in this oxidative dehydrogenation process, can be re-oxidized with air and generate useful process heat. Also provided are methods of using the oxide of sulfur oxygen transfer reagent, and an apparatus for effecting the oxidative dehydrogenation of the hydrocarbon feed. Methods of producing the oxide of sulfur oxygen transfer reagent are also provided.