Jorge Medina‐Valtierra

ORCID: 0000-0002-7526-0873
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About
Contact & Profiles
Research Areas
  • TiO2 Photocatalysis and Solar Cells
  • Biodiesel Production and Applications
  • Catalytic Processes in Materials Science
  • Spectroscopy and Chemometric Analyses
  • Water Quality Monitoring and Analysis
  • Advanced Photocatalysis Techniques
  • Mesoporous Materials and Catalysis
  • Copper-based nanomaterials and applications
  • Catalysis and Hydrodesulfurization Studies
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • ZnO doping and properties
  • History and advancements in chemistry
  • Catalysis and Oxidation Reactions
  • Enzyme Catalysis and Immobilization
  • Zeolite Catalysis and Synthesis
  • Pesticide Residue Analysis and Safety
  • Chemical and Environmental Engineering Research
  • Electronic and Structural Properties of Oxides
  • Lubricants and Their Additives
  • Digital Imaging for Blood Diseases
  • Advanced Chemical Sensor Technologies
  • Various Chemistry Research Topics
  • Solar-Powered Water Purification Methods
  • Public Health and Environmental Issues
  • Calcium Carbonate Crystallization and Inhibition

Instituto Tecnológico de Aguascalientes
2003-2021

Universidad Tecnológica de Aguascalientes
2004-2021

Universidad Enrique Díaz de León
2008-2009

Universidad de Guadalajara
2008-2009

Centro de Investigaciones en Optica
2001-2009

Universidad Autónoma de Zacatecas "Francisco García Salinas"
1995-2008

Universidad Autónoma Metropolitana
2003

A new acid catalyst based in a carbonaceous solid was functionalized using sulfuric as source of SO 3 H groups. This carbon‐based material prepared by the pyrolysis waste tire rubber used either or catalytic support. The process performed with flow N 2 at relatively low temperature to obtain mesoporous carbon and achieve an effective sulfonation. sulfonation method obtained from through direct immersion into concentrated SO 4 under reflux. solids were characterized several analytic...

10.1002/ep.12499 article EN Environmental Progress & Sustainable Energy 2016-11-01

Photocatalytic films of TiO2 doped with metal oxides, ZnFe2O4, ZnO, and CuO, were formed on glass plates by the ultraspinning method from Ti(IV) isopropoxide-based sol−gels. To test self-cleaning properties glass, a layer crystalline fluoranthene, polycyclic aromatic compound, was placed over spraying then exposing it to solar irradiation. The covering fluoranthene 1 wt % oxide-doped anatase degraded nearly 100% at 20 h exposure time. Thus, coated-glass transparency recovered totally between...

10.1021/ie8008555 article EN Industrial & Engineering Chemistry Research 2008-12-09

10.1016/j.saa.2003.11.020 article EN Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 2004-04-09

Abstract The trans-esterification and esterification of waste vegetable oil mainly under sub-critical temperature methanol in the presence sulfonated char were achieved. carbonaceous materials analyzed by means various physical chemical techniques such as Raman spectroscopy, X-ray diffractometry, programmed desorption photoelectrons spectroscopy. carbon-based large-acidity catalyst showed good thermal properties a high performance production methyl esters from oil, which was easily separated...

10.1515/ijcre-2017-0072 article EN International Journal of Chemical Reactor Engineering 2017-09-23

To contribute to the search for an oxygen-free biodiesel from vegetable oil, a process based in oleic acid hydrodeoxygenation over Ni/γ-Al2O3 catalysts was performed. In this work different wt % of Ni nanoparticles were prepared by wetness impregnation and tested as catalytic phases. Oleic used model molecule production due its high proportion oils food agro-industrial processes. A theoretical optimize yield n-C17 developed using size, distribution, (NPs) additional factors besides...

10.3390/catal6100156 article EN Catalysts 2016-10-19

The use of Raman spectroscopy to analyze blood biochemistry and hence distinguish between normal abnormal was investigated. Blood samples were obtained from 6 patients who clinically diagnosed with leukemia healthy volunteers. imprint put under the microscope several points chosen for measurement. All spectra collected by a confocal micro‐spectroscopy (Renishaw) NIR 830 nm laser. It is shown that serum control group can be discriminated when multivariate statistical methods principal...

10.1063/1.3175637 article EN AIP conference proceedings 2009-01-01

Chars were produced by thermal and catalytic pyrolysis of waste tire rubber used to remove Fe ions from potable water. In the process a small amount super‐acid catalyst was mixed with obtain better chars for adsorption heavy metals. Average yields obtained in processes (with 10 wt% catalyst) were: 46.6 33.9 wt%, respectively. The effects reaction time, temperature percentage on textural characteristics, elemental composition capacity resultant investigated. It demonstrated that operative...

10.1002/ep.12652 article EN Environmental Progress & Sustainable Energy 2017-06-11

Pt/γ‐Al 2 O 3 materials with different metal loading were prepared by incipient wetness impregnation method and tested as catalysts for hydrodeoxygenation (HDO) at 320 340°C 4 5 h of reaction time. Oleic acid was used model molecule in HDO process biodiesel production, since this is high proportion waste vegetable oils food agro‐industrial processes. Increasing the Pt‐nanoparticles (Pt‐NPs) content influences on obtaining higher yields n‐C 17 optimal conditions 335°C 4.86 nm nanoparticle...

10.1002/ep.12563 article EN Environmental Progress & Sustainable Energy 2017-03-06
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