摘要:
A catalyst for the oxidation of an alkane, alkene or mixtures thereof. The catalyst includes a mixed-metal oxide having the formula MoaVbNbcTedSbeOf wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.01 to 1.0, and f is dependent upon the oxidation state of the other elements, the catalyst further characterized by having at least two crystal phases, the first crystal phase being an orthorhombic M1 phase and the second crystal phase being a pseudo-hexagonal M2 phase, the orthorhombic M1 phase present in an amount between greater than 60 weight percent to less than 90 weight percent. The catalysts disclosed herein exhibit a chemisorption of NH3 of less than about 0.2 mmole per gram of metal oxide.
摘要:
A process for preparing a mixed metal oxide catalyst. The process includes the steps of admixing metal compounds, at least one of which is an oxygen containing compound, and at least one solvent to form a solution, removing the solvent from the solution to obtain a catalyst precursor, calcining the catalyst precursor at a temperature from about 350° C. to about 850° C. under a gaseous atmosphere comprising CO2, and forming a mixed-metal oxide catalyst. A process for reducing the formation of tellurium metal in a mixed metal oxide catalyst including tellurium is also provided.
摘要:
A porous material comprises oxides of silicon and aluminum and is substantially free of X-ray diffraction peaks in its calcined form. The material is characterized by the following properties: (a) a Bronsted acid site density as measured by temperature programmed ammonia adsorption of at least 0.005 mmol/g; (b) an alpha value of at least 0.5; (c) a specific surface area of about 50 to about 160 m2 g−1; (d) a total pore volume of about 0.14 to about 1.0 cm3 g−1; and (d) a micropore volume of about 0.001 to about 0.015 cm3 g−1.
摘要翻译:多孔材料包括硅和铝的氧化物,并且其煅烧形式基本上不含X射线衍射峰。 该材料的特征在于以下性质:(a)通过温度程序氨吸附测定的布朗斯台德酸位点密度为至少0.005mmol / g; (b)α值至少为0.5; (c)约50至约160m2 g-1的比表面积; (d)总孔体积为约0.14至约1.0cm 3 g -1; 和(d)约0.001至约0.015cm 3 g -1的微孔体积。
摘要:
A catalyst for the oxidation of an alkane, alkene or mixtures thereof. The catalyst includes a mixed-metal oxide having the formula MoaVbNbcTedSbeOf wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.01 to 1.0, and f is dependent upon the oxidation state of the other elements, the catalyst further characterized by having at least two crystal phases, the first crystal phase being an orthorhombic M1 phase and the second crystal phase being a pseudo-hexagonal M2 phase, the orthorhombic M1 phase present in an amount between greater than 60 weight percent to less than 90 weight percent. The catalysts disclosed herein exhibit a chemisorption of NH3 of less than about 0.2 mmole per gram of metal oxide.
摘要:
A catalyst for the oxidation of an alkane, alkene or mixtures thereof. The catalyst includes a mixed-metal oxide having the formula MoaVbNbcTedSbeOf wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.01 to 1.0, and f is dependent upon the oxidation state of the other elements, the catalyst further characterized by having at least two crystal phases, the first crystal phase being an orthorhombic M1 phase and the second crystal phase being a pseudo-hexagonal M2 phase, the orthorhombic M1 phase present in an amount between greater than 60 weight percent to less than 90 weight percent. The catalysts disclosed herein exhibit a chemisorption of NH3 of less than about 0.2 mmole per gram of metal oxide.
摘要:
A porous material comprises oxides of silicon and aluminum and is substantially free of X-ray diffraction peaks in its calcined form. The material is characterized by the following properties: (a) a Bronsted acid site density as measured by temperature programmed ammonia adsorption of at least 0.005 mmol/g; (b) an alpha value of at least 0.5; (c) a specific surface area of about 50 to about 160 m2 g−1; (d) a total pore volume of about 0.14 to about 1.0 cm3 g−1; and (d) a micropore volume of about 0.001 to about 0.015 cm3 g−1.
摘要翻译:多孔材料包括硅和铝的氧化物,并且其煅烧形式基本上不含X射线衍射峰。 该材料的特征在于以下性质:(a)通过温度程序氨吸附测定的布朗斯台德酸位点密度为至少0.005mmol / g; (b)α值至少为0.5; (c)约50至约160m2 g-1的比表面积; (d)总孔体积为约0.14至约1.0cm 3 g -1; 和(d)约0.001至约0.015cm 3 g -1的微孔体积。
摘要:
A catalyst for the oxidation of an alkane, alkene or mixtures thereof. The catalyst includes a mixed-metal oxide having the formula MoaVbNbcTedSbeOf wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.01 to 1.0, and f is dependent upon the oxidation state of the other elements, the catalyst further characterized by having at least two crystal phases, the first crystal phase being an orthorhombic M1 phase and the second crystal phase being a pseudo-hexagonal M2 phase, the orthorhombic M1 phase present in an amount between greater than 60 weight percent to less than 90 weight percent. The catalysts disclosed herein exhibit a chemisorption of NH3 of less than about 0.2 mmole per gram of metal oxide.
摘要:
In a process for producing cyclohexylbenzene hydroperoxide, cyclohexylbenzene is contacted with oxygen to produce a reaction product comprising cyclohexylbenzene hydroperoxide and unreacted cyclohexylbenzene. The reaction product is then maintained under conditions such that crystals of cyclohexylbenzene hydroperoxide form and separate from the reaction product. The cyclohexylbenzene hydroperoxide crystals are then recovered from the reaction product.
摘要:
Mono- or diester plasticizers of the formula: wherein A is either —OC(O)R′ or ═O, and X is either —COC(O)R or —C(O)OR, and R and R′ are C3 to C13 alkyl, which are the same or different, formed from cyclohexylbenzene and processes of making them.
摘要:
In a process for producing cyclohexylbenzene hydroperoxide, cyclohexylbenzene is contacted with oxygen to produce a reaction product comprising cyclohexylbenzene hydroperoxide and unreacted cyclohexylbenzene. The reaction product is then maintained under conditions such that crystals of cyclohexylbenzene hydroperoxide form and separate from the reaction product. The cyclohexylbenzene hydroperoxide crystals are then recovered from the reaction product.