Institution
Mexican Institute of Petroleum
Government•Mexico City, Mexico•
About: Mexican Institute of Petroleum is a government organization based out in Mexico City, Mexico. It is known for research contribution in the topics: Catalysis & Asphaltene. The organization has 3273 authors who have published 4170 publications receiving 87269 citations.
Topics: Catalysis, Asphaltene, Corrosion, Hydrodesulfurization, Adsorption
Papers published on a yearly basis
Papers
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TL;DR: In this article, a surfactant-assisted synthesis method was applied to prepare nanosized ceria particles used as the three-way catalyst supports, and the Rietveld refinements of crystalline structures of ceria calcined at various temperatures, together with XRD, FTIR, and TGA techniques, confirm that the surfactants are incorporated into the structural network of hydrous cerium oxide during the preparation stage, thus reducing the surface tension and diminishing the shrinkage of the mesoporous channels in the dried materials.
Abstract: A surfactant-assisted synthesis method was applied to prepare nanosized ceria particles used as the three-way catalyst supports. The Rietveld refinements of crystalline structures of ceria calcined at various temperatures, together with XRD, FTIR, and TGA techniques, confirm that the surfactant cations are incorporated into the structural network of hydrous cerium oxide during the preparation stage, thus reducing the surface tension and diminishing the shrinkage of the mesoporous channels in the dried materials. The surface area is therefore enhanced but it provokes a significant distortion effect on the structure. It is evidenced by XRD analyses that a well-ordered cubic structure of ceria was formed at a temperature as low as 80 °C. The average crystallite size of ceria is determined by XRD within nanoscale range (i.e., 9−31 nm) when the calcination temperature increases from 80 to 800 °C, which is in good agreement with the data determined by TEM and electron diffraction methods. In addition, cationic ...
51 citations
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TL;DR: In this paper, an effect of zeolite with alumina as a support for heavy oil hydroprocessing is presented. But, the results indicate that the combination of ultra-stable zeolites and alumina is able to produce bi-modal type of pores in the catalyst which may contribute to a better combination of hydrodesulfurization (HDS), hydrodemetallization (HDM), and the selective cracking of asphaltene over the acidic catalysts.
51 citations
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TL;DR: In this article, a co-impregnation method and sequential impregnation of catalysts was used to improve the performance of dibenzothiophene (DBT) in HDS at 3.3 MPa and 340°C.
50 citations
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TL;DR: In this article, a reliability-based partial safety factor calibration study for a LRFD mooring line design criteria considering the three approaches mentioned above is presented, which is applied to three FPSOs considering North Sea environmental conditions and different water depths.
50 citations
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TL;DR: The benchmark indicates that an entropy-based score can capture the metabolic machinery of interest and can be used to efficiently classify large genomic and metagenomic datasets, including uncultivated/unexplored taxa.
Abstract: The increasing number of metagenomic and genomic sequences has dramatically improved our understanding of microbial diversity, yet our ability to infer metabolic capabilities in such datasets remains challenging. We describe the Multigenomic Entropy Based Score pipeline (MEBS), a software platform designed to evaluate, compare, and infer complex metabolic pathways in large "omic" datasets, including entire biogeochemical cycles. MEBS is open source and available through https://github.com/eead-csic-compbio/metagenome_Pfam_score. To demonstrate its use, we modeled the sulfur cycle by exhaustively curating the molecular and ecological elements involved (compounds, genes, metabolic pathways, and microbial taxa). This information was reduced to a collection of 112 characteristic Pfam protein domains and a list of complete-sequenced sulfur genomes. Using the mathematical framework of relative entropy (H΄), we quantitatively measured the enrichment of these domains among sulfur genomes. The entropy of each domain was used both to build up a final score that indicates whether a (meta)genomic sample contains the metabolic machinery of interest and to propose marker domains in metagenomic sequences such as DsrC (PF04358). MEBS was benchmarked with a dataset of 2107 non-redundant microbial genomes from RefSeq and 935 metagenomes from MG-RAST. Its performance, reproducibility, and robustness were evaluated using several approaches, including random sampling, linear regression models, receiver operator characteristic plots, and the area under the curve metric (AUC). Our results support the broad applicability of this algorithm to accurately classify (AUC = 0.985) hard-to-culture genomes (e.g., Candidatus Desulforudis audaxviator), previously characterized ones, and metagenomic environments such as hydrothermal vents, or deep-sea sediment. Our benchmark indicates that an entropy-based score can capture the metabolic machinery of interest and can be used to efficiently classify large genomic and metagenomic datasets, including uncultivated/unexplored taxa.
50 citations
Authors
Showing all 3282 results
Name | H-index | Papers | Citations |
---|---|---|---|
Ignacio E. Grossmann | 112 | 776 | 46185 |
Yiu-Wing Mai | 97 | 1048 | 46486 |
Guilherme Borges | 79 | 446 | 60833 |
Francesc Illas | 76 | 661 | 24741 |
Zhong-Zhen Yu | 75 | 254 | 21817 |
Jim A. Field | 72 | 329 | 16239 |
Oliver C. Mullins | 66 | 406 | 17060 |
Gilbert F. Froment | 58 | 169 | 13856 |
Joaquín Pérez-Pariente | 57 | 245 | 13751 |
Annia Galano | 55 | 209 | 10216 |
Miguel Castro | 54 | 158 | 20334 |
Francisco Ortega | 51 | 277 | 8135 |
Rubén Pérez | 51 | 369 | 11853 |
Jorge Ancheyta | 50 | 255 | 8484 |
Shi-Hai Dong | 50 | 222 | 6756 |