A method of synthesizing manganese oxide nanocorals comprises the steps of a) heating a potassium permanganate solution; (b) providing manganese sulfate in a basic solution; (c) combining the manganese sulfate basic solution drop-wise with the heated potassium permanganate solution until a brown precipitate is formed; (d) stirring the brown precipitate for a period of about 12 hours at a temperature greater than 300 K; (e) isolating the precipitate; and (f) drying the precipitate inside an oven at a temperature greater than 300 K to provide manganese oxide nanocorals. The manganese oxide nanocorals include nanowires having a diameter typically ranging from about 20 nm to about 40 nm.

A method for producing propylene, the method contains: producing a silica composite by preparing a raw material mixture containing silica and zeolite; drying the raw material mixture to obtain a dried product; and calcining the dried product; wherein the method contains the step of bringing a solution of phosphate into contact with the zeolite and/or the dried product to thereby adjust a phosphorus content in the silica composite to 0.01 to 1.0% by mass based on the total mass of the silica composite, a source of the phosphorus is phosphate, and the zeolite is of MFI type and has a SiO.sub.2/Al.sub.2O.sub.3 ratio (by mol) of 20 or more; and bringing the silica composite into contact with a hydrocarbon source containing at least one component selected from the group consisting of ethylene, ethanol, methanol, and dimethyl ether in the presence of steam.

A method for controllably producing a hematite-containing Fischer-Tropsch catalyst by combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases; holding the precipitate from at a hold temperature for a hold time to provide a hematite containing precipitate; and washing the hematite containing precipitate via contact with a wash solution and filtering, to provide a washed hematite containing catalyst. The method may further comprise promoting the washed hematite containing catalyst with a chemical promoter; spray drying the promoted hematite containing catalyst; and calcining the spray dried hematite containing catalyst to provide a calcined hematite-containing Fischer-Tropsch catalyst.

Disclosed are hierarchically porous carbon materials with a plurality of discreet nanoparticles dispersed on their carbon phase. The materials possess a continuous network of pores that spans the porous material, permitting the flow of fluids into and through the material. The porous materials can be used as heterogeneous catalysts.

Methods for treating sepsis are provided and include the administration an effective amount of cerium oxide nanoparticles to a subject in need thereof. The sepsis being treated can include polymicrobial sepsis and can include the administration of about 0.1 mg/kg to about 1.0 mg/kg of the cerium oxide nanoparticles. The administration of the cerium oxide nanoparticles further allows one or more of the symptoms of sepsis to be treated. Methods of treating an inflammatory disorder that make use of cerium oxide nanoparticles are further provided.

The present invention concerns a process for the production of metal doped cerium compositions comprising a cerium oxide and a metal oxide by precipitation. The invention also concerns metal doped cerium compositions providing high crystallites size and exhibiting high thermal stabilities, which may be used as a catalytic support or for polishing applications.

A production method comprising: adding a hydroxycarboxylic acid to an aqueous solution containing a Ce salt, a Zr salt, an Al salt, and at least one selected from a La salt, an Mg salt, and a Ca salt, to produce a gel, heating the gel to obtain a solid product by decomposition of the salts, firing the solid product to obtain a fired product containing a ceria-zirconia-based regular array phase precursor and an aluminate-based composite oxide precursor, performing a reducing heat treatment of the fired product to obtain a first composite having mutually dispersed therein a pyrochlore phase and an aluminate-based composite oxide, and performing an oxidizing heat treatment of the first composite to obtain a second composite in which at least part of the pyrochlore phase is transformed into a phase; and an oxygen storage material having mutually dispersed therein the composite oxide and the regular array phase.

A method for preparing a porous inorganic material by at least: a) reaction of a mixture of one precursor of the oxide of a metal X in solution and a precursor of the oxide of a metal Y at a temperature of between 30 and 70 C., X and Y being, independently aluminum, cobalt, indium, molybdenum, nickel, silicon, titanium, zirconium, zinc, iron, copper, manganese, gallium, germanium, phosphorus, boron, vanadium, tin, lead, hafnium, niobium, yttrium, cerium, gadolinium, tantalum, tungsten, antimony, europium or neodymium; b) mixing of the mixture obtained at the end of a) at a temperature of between 80 and 150 C., the mixing period being adjusted so as to obtain a paste that exhibits a fire loss of between 20% by weight and 90% by weight; c) shaping of the porous inorganic material;
a) to c) being performed within an extruder.

A method for making a nanocatalyst includes the steps of forming a mixture of a catalyst precursor, and a crude oil media, wherein the catalyst precursor is insoluble in the oil media, then heating the mixture in the presence of a stability agent, thereby liberating the catalyst particles from the precursor while the stabilizing agent prevents growth of the catalyst particle so that nanocatalyst particles form and are maintained in the oil media. The resulting catalyst composition as well as a hydroconversion process using the catalyst are also disclosed.

This document relates to oxidative dehydrogenation catalyst materials that include molybdenum, vanadium, beryllium, oxygen, and optionally aluminum.