摘要:
Embodiments of methods and catalysts for deoxygenating a biomass-derived pyrolysis oil are provided. The method comprises the step of contacting the biomass-derived pyrolysis oil with a first deoxygenating catalyst in the presence of hydrogen at first predetermined hydroprocessing conditions to form a first low-oxygen biomass-derived pyrolysis oil effluent. The first deoxygenating catalyst comprises a neutral catalyst support, nickel, cobalt, and molybdenum. The first deoxygenating catalyst comprises nickel in an amount calculated as an oxide of from about 0.1 to about 1.5 wt. %.
摘要:
A process for producing at least one blended fuel from a paraffin rich component and a cyclic rich component, where each of the components are generated from a renewable feedstock, is presented. The paraffin rich component is generated from glycerides and free fatty acids in feedstocks such as plant and animal oils. The cyclic rich component is generated from biomass derived pyrolysis oil. The source of the animal or plant oil and the biomass may be the same renewable source.
摘要:
A process for stabilizing pyrolysis oil has been developed. The process involves heating the pyrolysis oil at a temperature of about 40° C. to about 85° C. under a reducing atmosphere for a time to stabilize the oil. The reducing atmosphere or gas is preferably hydrogen.
摘要:
A process for the selective oxidation of methane to methanol using a supported transition metal catalyst has been developed. Examples of the transition metals which can be used are copper and palladium, while an example of a support is silica. Optionally, the catalyst can contain a modifier component such as cesium. Generally the process involves contacting a gas stream, comprising methane, a solvent such as trifluoroacetic acid and an oxidizing agent such as air or hydrogen peroxide with the catalyst, at oxidation conditions to produce a methyl ester, e.g. methyl trifluoroacetate. Finally, the methyl ester is hydrolyzed to yield a methanol product stream.
摘要:
A process and catalyst for preparing organic hydroperoxides by oxidizing hydrocarbon compounds in the presence of an oxygen-containing gas and a catalyst containing a transition metal on a solid support.
摘要:
A process for separating one chiral compound from a mixture of chiral compounds is disclosed. The separation process involves using a chiral stationary phase (CSP) which comprises a chiral organic material deposited on an amorphous silica support having a unimodal distribution of pore sizes in the range of about 300 .ANG. to about 25,000 .ANG. and a surface area of less than about 30 m.sup.2 /g.
摘要:
Small pore silicas serving as the inert core support in chiral stationary phases show a surprising increase in column capacity relative to conventional chiral stationary phases having large pore silicas as the inert core support. This affords increased productivity and lower overall costs for chiral resolutions using a chiral stationary phase as adsorbent and an achiral liquid as eluant.
摘要:
An adsorptive process to separate the components of a solution of linear and branched hydrocarbons into a linear hydrocarbon portion and a branched hydrocarbon portion where the adsorbent is an alkylene-bridged polysilsesquioxane has been developed. The hydrocarbon components to be separated may be alkanes, alkenes, or alkynes, and the alkylene-bridging group of the adsorbent may contain from about 2 to about 14 carbon atoms. A specific embodiment of the invention is one where the process is operated in the simulated moving bed mode.
摘要:
A process for controlling the simultaneous production of hydrocarbons with boiling points in both the diesel fuel range and the aviation fuel range from renewable feedstocks originating from plants or animals other than petroleum feedstocks is described. The hydrocarbon product can be adjusted by changing the feedstocks without requiring different process equipment.
摘要:
Processes for producing reduced acid lignocellulosic-derived pyrolysis oil are provided. In a process, lignocellulosic material is fed to a heating zone. A basic solid catalyst is delivered to the heating zone. The lignocellulosic material is pyrolyzed in the presence of the basic solid catalyst in the heating zone to create pyrolysis gases. The oxygen in the pyrolysis gases is catalytically converted to separable species in the heating zone. The pyrolysis gases are removed from the heating zone and are liquefied to form the reduced acid lignocellulosic-derived pyrolysis oil.