A non-isothermal kinetic study of the oxidation of “carbon-modified MoO3” in the temperature rang... more A non-isothermal kinetic study of the oxidation of “carbon-modified MoO3” in the temperature range of 150–550°C by simultaneous TGA–DTA was investigated. During the oxidation process, two thermal events were detected, which are associated with the oxidation of carbon in MoOxCy and MoO2 to MoO3. The model-free and model-fitting kinetic approaches have been applied to TGA experimental data. The solid state-kinetics
The active carbon (AC) catalyst was studied by hydrocracking of Middle Eastern vacuum residue (VR... more The active carbon (AC) catalyst was studied by hydrocracking of Middle Eastern vacuum residue (VR) for heavy oil upgrading. It was observed that the active carbon has the affinity to heavy hydrocarbon compounds and adsorption selectivity to asphaltenes, and exhibits better ability to restrict the coke formation during the hydrocracking reaction of VR. The mesopore of active carbon was thought
Energy Fuels an American Chemical Society Journal, 2004
To understand the relationship between total acid number and sulfur content, relative to corrosiv... more To understand the relationship between total acid number and sulfur content, relative to corrosivity, a complete characterization of these parameters along the distillation curve of a desalted crude oil was performed. Naphthenic acid identification and a complete physical ...
... Mesoporous modified support catalyst and its effects on the hydrogenolysis reaction selectivi... more ... Mesoporous modified support catalyst and its effects on the hydrogenolysis reaction selectivity Gonzalo H. Tapia ^, Teresa Cortez ^, Rene Zarate ^, Javier Herbert ^, Jose L. Cano ^ ^Mayan Crude Program, Mexican of Petroleum Institute, Eje Central Lazaro Cardenas 152 cp ...
Hydroisomerization of several model hydrocarbons such as n-heptane, 2-methylhexane, 3-methylhexan... more Hydroisomerization of several model hydrocarbons such as n-heptane, 2-methylhexane, 3-methylhexane, 2,3-dimethylpentane, cyclohexane, methylcyclopentane, benzene and toluene using H 2-reduced MoO 3 as catalyst is described here in order to rationalize the involved reactions and mechanisms of reactions. In addition, the reactions in this process, the hydrocracking and carbonaceous deposits were also rationalized. In the case of n-heptane the results for long time reaction (164 h) suggest that hydroisomerization and hydrocracking are not only taking place as consecutive reactions (n-heptane ? monobranched products ? multibranched products ? hydrocracked products); but also as parallel reactions (n-heptane, monobranched or multibranched products ? hydrocracked products). Likewise, these results showed that from initial stages, hydroisomerization of n-heptane mainly leads to C 4 , C 3 and C 2 hydrocracked products in a mole ratio of 1:2.2:2, respectively. It is interesting to point out that both i-butane and C 1 are not formed from n-heptane under the experimental conditions of this work. In the case of 2-methylhexane hydroisomerization the mole ratio of C 4 , C 3 and C 2 is 1:0.6:0.006, and the C 4 fraction is mainly formed by i-and n-butane (1.6:1 mol ratio). C 1 was not observed in the 2methylhexane hydroisomerization. On the other hand, the results obtained in the hydroisomerization of 3-methylhexane, 2,3-dimethylpentane, methylcyclopentane, cyclohexane and toluene indicate that the transformation proceeded without i-butane and C 1 , nevertheless n-butane is formed in noticeable amount. A quantitative balance between reactants and products of hydroisomerization indicated that each C 4 , C 3 or C 2 molecule is formed exclusively from one reactant molecule. That is, the hydrocracking of each reactant molecule generates two fragments: one corresponding to the C 4 , C 3 or C 2 molecule (from a carbenium ion) and the other corresponding to the olefinic molecule (propene, butenes, pentenes, cyclopentene). It is proposed that the formation of carbonaceous deposit occurs through a sequence of consecutive reactions consisting of oligomerization and/or alkylation, cyclization, cycloaddition, and rearrangement of the olefinic products formed during hydrocracking.
An improved process for high-quality diesel fuel production by hydrotreating atmospheric gas oil ... more An improved process for high-quality diesel fuel production by hydrotreating atmospheric gas oil (SRGO) and light cycle oil (LCO) blends is presented in this paper. For this purpose, a set of blends of 5, 10 and 15% by volume of LCO with final boiling points of 300, 325 and 350 ...
... 5. Following the same procedure already described for the naphthenic acids standard, Table 3 ... more ... 5. Following the same procedure already described for the naphthenic acids standard, Table 3 and Table 4 were prepared in order to show the percentage composition of naphthenic acid components by z and carbon number for Isthmus and Maya crude oils, respectively. ...
In order to provide a solution for refineries having limited catalytic reforming capacity, a proc... more In order to provide a solution for refineries having limited catalytic reforming capacity, a process scheme for incorporating most of the low octane heavy hydrotreatment and visbreaker naphthas into diesel is presented in this paper. This scheme involves blending the visbreaker naphtha with the feed to the diesel hydrotreatment units, processing this blend at the usual conditions for diesel hydrodesulfurization
2002 Georgina C. Laredo / Yolanda Figueroa / José Luis Cano / Ma. Teresa Mares / Jesús Castillo E... more 2002 Georgina C. Laredo / Yolanda Figueroa / José Luis Cano / Ma. Teresa Mares / Jesús Castillo ESTUDIO DE LA COMPOSICIÓN QUÍMICA DEL ACEITE CÍCLICO LIGERO PROVENIENTE DE CRUDOS MEXICANOS Journal of the Mexican Chemical Society, abril-junio, año/vol. ...
A non-isothermal kinetic study of the oxidation of “carbon-modified MoO3” in the temperature rang... more A non-isothermal kinetic study of the oxidation of “carbon-modified MoO3” in the temperature range of 150–550°C by simultaneous TGA–DTA was investigated. During the oxidation process, two thermal events were detected, which are associated with the oxidation of carbon in MoOxCy and MoO2 to MoO3. The model-free and model-fitting kinetic approaches have been applied to TGA experimental data. The solid state-kinetics
The active carbon (AC) catalyst was studied by hydrocracking of Middle Eastern vacuum residue (VR... more The active carbon (AC) catalyst was studied by hydrocracking of Middle Eastern vacuum residue (VR) for heavy oil upgrading. It was observed that the active carbon has the affinity to heavy hydrocarbon compounds and adsorption selectivity to asphaltenes, and exhibits better ability to restrict the coke formation during the hydrocracking reaction of VR. The mesopore of active carbon was thought
Energy Fuels an American Chemical Society Journal, 2004
To understand the relationship between total acid number and sulfur content, relative to corrosiv... more To understand the relationship between total acid number and sulfur content, relative to corrosivity, a complete characterization of these parameters along the distillation curve of a desalted crude oil was performed. Naphthenic acid identification and a complete physical ...
... Mesoporous modified support catalyst and its effects on the hydrogenolysis reaction selectivi... more ... Mesoporous modified support catalyst and its effects on the hydrogenolysis reaction selectivity Gonzalo H. Tapia ^, Teresa Cortez ^, Rene Zarate ^, Javier Herbert ^, Jose L. Cano ^ ^Mayan Crude Program, Mexican of Petroleum Institute, Eje Central Lazaro Cardenas 152 cp ...
Hydroisomerization of several model hydrocarbons such as n-heptane, 2-methylhexane, 3-methylhexan... more Hydroisomerization of several model hydrocarbons such as n-heptane, 2-methylhexane, 3-methylhexane, 2,3-dimethylpentane, cyclohexane, methylcyclopentane, benzene and toluene using H 2-reduced MoO 3 as catalyst is described here in order to rationalize the involved reactions and mechanisms of reactions. In addition, the reactions in this process, the hydrocracking and carbonaceous deposits were also rationalized. In the case of n-heptane the results for long time reaction (164 h) suggest that hydroisomerization and hydrocracking are not only taking place as consecutive reactions (n-heptane ? monobranched products ? multibranched products ? hydrocracked products); but also as parallel reactions (n-heptane, monobranched or multibranched products ? hydrocracked products). Likewise, these results showed that from initial stages, hydroisomerization of n-heptane mainly leads to C 4 , C 3 and C 2 hydrocracked products in a mole ratio of 1:2.2:2, respectively. It is interesting to point out that both i-butane and C 1 are not formed from n-heptane under the experimental conditions of this work. In the case of 2-methylhexane hydroisomerization the mole ratio of C 4 , C 3 and C 2 is 1:0.6:0.006, and the C 4 fraction is mainly formed by i-and n-butane (1.6:1 mol ratio). C 1 was not observed in the 2methylhexane hydroisomerization. On the other hand, the results obtained in the hydroisomerization of 3-methylhexane, 2,3-dimethylpentane, methylcyclopentane, cyclohexane and toluene indicate that the transformation proceeded without i-butane and C 1 , nevertheless n-butane is formed in noticeable amount. A quantitative balance between reactants and products of hydroisomerization indicated that each C 4 , C 3 or C 2 molecule is formed exclusively from one reactant molecule. That is, the hydrocracking of each reactant molecule generates two fragments: one corresponding to the C 4 , C 3 or C 2 molecule (from a carbenium ion) and the other corresponding to the olefinic molecule (propene, butenes, pentenes, cyclopentene). It is proposed that the formation of carbonaceous deposit occurs through a sequence of consecutive reactions consisting of oligomerization and/or alkylation, cyclization, cycloaddition, and rearrangement of the olefinic products formed during hydrocracking.
An improved process for high-quality diesel fuel production by hydrotreating atmospheric gas oil ... more An improved process for high-quality diesel fuel production by hydrotreating atmospheric gas oil (SRGO) and light cycle oil (LCO) blends is presented in this paper. For this purpose, a set of blends of 5, 10 and 15% by volume of LCO with final boiling points of 300, 325 and 350 ...
... 5. Following the same procedure already described for the naphthenic acids standard, Table 3 ... more ... 5. Following the same procedure already described for the naphthenic acids standard, Table 3 and Table 4 were prepared in order to show the percentage composition of naphthenic acid components by z and carbon number for Isthmus and Maya crude oils, respectively. ...
In order to provide a solution for refineries having limited catalytic reforming capacity, a proc... more In order to provide a solution for refineries having limited catalytic reforming capacity, a process scheme for incorporating most of the low octane heavy hydrotreatment and visbreaker naphthas into diesel is presented in this paper. This scheme involves blending the visbreaker naphtha with the feed to the diesel hydrotreatment units, processing this blend at the usual conditions for diesel hydrodesulfurization
2002 Georgina C. Laredo / Yolanda Figueroa / José Luis Cano / Ma. Teresa Mares / Jesús Castillo E... more 2002 Georgina C. Laredo / Yolanda Figueroa / José Luis Cano / Ma. Teresa Mares / Jesús Castillo ESTUDIO DE LA COMPOSICIÓN QUÍMICA DEL ACEITE CÍCLICO LIGERO PROVENIENTE DE CRUDOS MEXICANOS Journal of the Mexican Chemical Society, abril-junio, año/vol. ...
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