摘要:
Disclosed are a semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof. The semiconductor photocatalyst has the atomic composition ratio of M-N-Ax; wherein M-N are IIB group elements to VIA group elements, or IIIA group elements to VA group elements, A being one element or more than two elements selected from the group consisting of cobalt, nickel, iron, copper, chromium, palladium, platinum, ruthenium, rhodium, iridium and silver; and 0.02% ‰¤ x ‰¤ 1.0%. The method of in-situ preparation of the highly effective semiconductor photocatalyst and catalytically reforming biomass derivatives for hydrogen generation by driving photoreaction with visible light via quantum dots is simple, fast, highly effective, inexpensive and practical. The in situ reaction can occur in sunlight without the need of harsh conditions such as calcination.
摘要:
Disclosed are a semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof. The semiconductor photocatalyst has the atomic composition ratio of M-N-Ax; wherein M-N are IIB group elements to VIA group elements, or IIIA group elements to VA group elements, A being one element or more than two elements selected from the group consisting of cobalt, nickel, iron, copper, chromium, palladium, platinum, ruthenium, rhodium, iridium and silver; and 0.02% ≤ x ≤ 1.0%. The method of in-situ preparation of the highly effective semiconductor photocatalyst and catalytically reforming biomass derivatives for hydrogen generation by driving photoreaction with visible light via quantum dots is simple, fast, highly effective, inexpensive and practical. The in situ reaction can occur in sunlight without the need of harsh conditions such as calcination.
摘要:
The invention concerns a process for upgrading lower quality carbonaceous feedstock using a slurry catalyst composition. The use of particular organometallic compounds as precursors for the dispersed active catalyst allows for reduced coke formation.
摘要:
The present invention relates to a method of making a chemical compound comprising nickel, aluminum, oxygen and sulfur having a general formula Ni2xAl2O2x+3−zSz, wherein 0.5≦̸x≦̸3 and 0≦̸z≦̸2x. The material is effective for the removal of S-compounds from gaseous streams, effective for catalyzing a water gas shift reaction and suppresses the formation of carbon monoxide and hydrogen under conditions where a water gas shift reaction is catalyzed.
摘要:
Contact of a crude feed with one or more catalysts produces a total product that includes a crude product. The crude feed has a residue content of at least 0.2 grams of residue per gram of crude feed. The crude product is a liquid mixture at 25 °C and 0.101 MPa. One or more properties of the crude product may be changed by at least 10 % relative to the respective properties of the crude feed. In some embodiments, gas is produced during contact with one or more catalysts and the crude feed.
摘要:
A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectively of elemental sulfur over byproducts and has a high conversion efficiency. Various feed stream contaminants, such as water vapor are well tolerated. Additonally, hydrogen, carbon monoxide, or hydrogen sulfides can be employed as the reducing gases while maintaining high conversion efficiency. This allows a much wider range of uses and higher level of feed stream contaminants than prior art catalysts.
摘要:
The invention concerns a method whereby the gas to be treated is oxidised in sulphur by being contacted with an oxidation catalyst containing at least an oxysulphide of a metal selected among Fe, Cu, Ni, Co, Cr, Mo and W, associated with a silicon carbide support, by operating at temperatures, which are higher than the dew point of the sulphur formed in the treated gas and more specifically ranging between 180 °C and 500 °C. The invention is useful for eliminating H2S contained in gases of various origins with recovery of said H2S essentially in the form of sulphur.