摘要:
A reduction catalyst having a first metal component comprising one of Co, Os, Fe, Re, Rh and Ru. The first metal component is present in the catalyst at from 0.5 percent to 20 percent, by weight. A second metal component differing from the first metal component present in the catalyst with the second metal component being selected from the group consisting of Fe, Mn, Ru, Os, Rh, Ir, Ni, Pd, Pt, Ag, Au, Zn, Co, Re, Cu, Pb, Cr, W, Mo, Sn, Nb, Cd, Te, V, Bi, Ga and Na. A hydrogenation catalyst comprising one or both of Ni and Co and one or more elements selected from the group consisting of Mn, Fe, Ag, Au, Mo and Rh.
摘要:
Hydrogenolysis processes are provided that can include providing a hydrogenolysis reactor having a catalyst therein. The catalyst can be exposed to a reducing agent in the absence of polyhydric alcohol compound while maintaining a temperature of the catalyst above 290° C. Hydrogenolysis processes can also include providing a passivated catalyst to within a reactor and exposing the catalyst to a reducing atmosphere while maintaining the catalyst at a temperature less than 210° C.Hydrogenolysis catalyst preparation methods are provided that can include exposing the catalyst to a first reducing atmosphere while maintaining the catalyst at a first temperature to reduce at least a portion of the catalyst. The method can also include passivating at least the portion of the catalyst and depassivating the portion of the catalyst in the presence of a second reducing atmosphere while maintaining the portion of the catalyst at a second temperature less than the first temperature.
摘要:
A process is disclosed for conversion of salts of β-hydroxy carbonyl compounds forming useful conversion products including, e.g., α,β-unsaturated carbonyl compounds and/or salts of α,β-unsaturated carbonyl compounds. Conversion products find use, e.g., as feedstock and/or end-use chemicals.
摘要:
Hydrogenolysis systems are provided that can include a reactor housing an Ru-comprising hydrogenolysis catalyst and wherein the contents of the reactor is maintained at a neutral or acidic pH. Reactant reservoirs within the system can include a polyhydric alcohol compound and a base, wherein a weight ratio of the base to the compound is less than 0.05. Systems also include the product reservoir comprising a hydrogenolyzed polyhydric alcohol compound and salts of organic acids, and wherein the moles of base are substantially equivalent to the moles of salts or organic acids. Processes are provided that can include an Ru-comprising catalyst within a mixture having a neutral or acidic pH. A weight ratio of the base to the compound can be between 0.01 and 0.05 during exposing.
摘要:
Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition. The reactant composition can include a multihydric alcohol compound and the product composition can include a carbonyl compound. The catalyst composition can include a metal effective to facilitate catalyst activation. Processes disclosed also include supplementing a dehydration catalyst with a promoter, and activating the supplemented catalyst in the presence of oxygen. Processes also include providing a supplemented dehydration catalyst to within a reactor, and exposing a multihydric alcohol compound to the dehydration catalyst, with the exposing forming coke within the reactor. Oxygen can be provided to the reactor to remove at least a portion of the coke.
摘要:
Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition. Catalyst compositions are also provided that can include metal phosphate compositions, metal phosphorous compositions, and/or solid support compositions with the solid support compositions including one or more of F—Al2O3, ZrO2—CO2, SiO2—Al2O3—CO2, SiO2 Al2O3, Alundum, and Silica such as Ludox AS-30
摘要翻译:提供化学生产方法,其可以包括将反应物组合物暴露于催化剂组合物以形成产物组合物。 还提供催化剂组合物,其可以包括金属磷酸盐组合物,金属磷组合物和/或固体支持组合物,其中固体支持组合物包括F-Al 2 O 3,ZrO 2 -CO 2,SiO 2 -Al 2 O 3 -CO 2,SiO 2 Al 2 O 3,Alundum中的一种或多种 ,和二氧化硅如Ludox AS-30
摘要:
Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition. Catalyst compositions are also provided that can include metal phosphate compositions, metal phosphorous compositions, and/or solid support compositions with the solid support compositions including one or more of F—Al2O3, ZrO2—CO2, SiO2—Al2O3—CO2, SiO2 Al2O3, Alundum, and Silica such as Ludox AS-30.
摘要翻译:提供化学生产方法,其可以包括将反应物组合物暴露于催化剂组合物以形成产物组合物。 还提供催化剂组合物,其可以包括金属磷酸盐组合物,金属磷组合物和/或固体支持组合物,其中固体支持组合物包括F-Al 2 O 3,ZrO 2 -CO 2,SiO 2 -Al 2 O 3 -CO 2,SiO 2 Al 2 O 3,Alundum中的一种或多种 ,和二氧化硅如Ludox AS-30。
摘要:
Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition. The reactant composition can include a multihydric alcohol compound and the product composition can include a carbonyl compound. The catalyst composition can include a metal effective to facilitate catalyst activation. Processes disclosed also include supplementing a dehydration catalyst with a promoter, and activating the supplemented catalyst in the presence of oxygen. Processes also include providing a supplemented dehydration catalyst to within a reactor, and exposing a multihydric alcohol compound to the dehydration catalyst, with the exposing forming coke within the reactor. Oxygen can be provided to the reactor to remove at least a portion of the coke.
摘要:
Chemical production processes are provided than can include exposing a reactant composition to a catalyst composition to form a product composition, with the reactant composition including a multihydric alcohol compound and product composition including a carbonyl compound. The catalyst composition can include one or more elements of groups 5 and 6 of the periodic table of elements. Catalyst compositions are provided that can include one or more of niobia, hydrated niobia, tungstic acid, phosphotungstic acid, and phosphomolybdic acid.
摘要:
The present disclosure relates to facilities, systems, methods and/or catalysts for use in chemical production. In particular, the disclosure provides innovations relating to dehydration of multihydric compounds such as glycerol to form acrolein. Some of these innovations include continuous reaction systems as well as system parameters that allow for long term production.