Article
Chemistry, Multidisciplinary
Rolf S. Postma, Leon Lefferts
Summary: The study investigated the impact of ethane and ethylene on methane coupling, finding that their addition significantly increases methane conversion rates. Ethylene is more effective with longer residence times. It was also observed that methane activation through C-2 addition primarily occurs in the gas-phase, while catalytic activation is minimal.
REACTION CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Wenqian Wu, Zichao Guo, Liping Chen, Wanghua Chen, Shichun Weng, Huabo Li
Summary: This study conducted an in-depth investigation on the thermal decomposition of DMSO, and found that the addition of zinc oxide can significantly reduce the decomposition rate and extend the adiabatic induction period of DMSO. It was demonstrated that zinc oxide does not alter the decomposition pathways of DMSO, but can promote the decomposition of methanethiol, a decomposition intermediate of DMSO.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2022)
Article
Chemistry, Multidisciplinary
Jonathan Kirschner Solberg Hansen, Christian G. Tortzen, Preben Graae Sorensen, Mogens Brondsted Nielsen
Summary: This article elucidates the mechanism of the [2+2] cycloaddition - retro-electrocyclization reaction through detailed kinetics studies using H-1 NMR spectroscopy. By considering multiple experiments, it was found that the autocatalysis model with the final product promoting the first step best described the experimental data. Transient cyclobutene was successfully generated and confirmed as an intermediate through proper choice of conditions.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Engineering, Environmental
Shichun Weng, Wenqian Wu, Zichao Guo, Fuqing Meng, Ying Chen, Wanghua Chen
Summary: This study thoroughly investigated the formation mechanism of TNR during the DNB production process, analyzed the thermal decomposition behavior and kinetics of TNR. The research confirmed that TNR is mainly formed during the water washing stage in the production process.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Ying Cai, Jinhong Fan, Zhigang Liu
Summary: This study investigated the degradation of TTC using a FeS-based Fenton-like process in the presence of copper ions. It was found that acidic condition and Cu(II) enhanced the H2O2 decomposition and TTC degradation. The study also proposed possible degradation pathways of TTC based on detected products analysis.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Miloslav Pekar
Summary: Autocatalytic reactions, in contrast to traditional mass-action kinetics, can be verified and generalized using modern non-equilibrium thermodynamics, ensuring consistency with the entropic inequality.
Article
Engineering, Environmental
Rebeka Szabo, Gabor Lente
Summary: This paper introduces a deterministic approximation method for a complicated kinetic model of nanoparticle formation. The method calculates the average nanoparticle size distribution and important moments accurately, and its applicability is validated.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Bojan Jankovic, Marija Kojic, Milena Milosevic, Milena Rosic, Hadi Waisi, Bojana Bozilovic, Nebojsa Manic, Vladimir Dodevski
Summary: This study successfully valorized and upcycled cigarette butt (CB) filters through thermo-chemical conversion. The decomposition mechanism of the precursor material, cellulose acetate filter (r-CAcF), was analyzed using micro-scale experiments and detailed kinetic study. The results revealed complex mechanisms involved in the decomposition, including cellulose polymorphic transformation and hydrolytic decomposition of cellulose. Macro-scale experiments showed the effects of operating temperature and heating rate on the surface characteristics of the manufactured carbon.
Article
Chemistry, Physical
Huan Peng, Jian Guan, Qilong Yan, Xiaolong Fu, Tao Huang, Rufang Peng, Bo Jin
Summary: This paper investigates the thermal decomposition of aluminum trihydride and calculates its kinetic parameters. The decomposition process is divided into three stages, and it takes 224.7 days for aluminum trihydride (purity >99%) to reach 0.1% decomposition depth at room temperature in a vacuum environment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Biomedical
Jihui Gao, Yizhan Guo, Rongrong Yan, Jianfen Liang, Dong Yang
Summary: This study compared the effects of reducing agents and oxidizing agents in dough, finding that reducing agents increased dough extensibility while oxidizing agents enhanced dough tenacity and baking strength. By analyzing changes in the gluten network, the study provides a theoretical basis for the specified application of different dough rheology improvers.
Article
Chemistry, Organic
Ilhan Sevim
Summary: The key feature of non-enzymatic self-replicating systems is the formation of catalytically active ternary complexes through isosteric replacements, allowing for the creation of new replicating species. By applying isosteric replacement on the spacer part, the self-replicating ability was conserved and the new system showed higher selectivity for the favored replicator. This study demonstrates the successful modification and improvement of self-replicating systems through isosteric replacements and selective blocking of autocatalytic cycles.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
William E. Robinson, Elena Daines, Peer van Duppen, Thijs de Jong, Wilhelm T. S. Huck
Summary: This study demonstrates how complex systems of chemical reactions can exhibit well-defined self-organization in response to varying environmental conditions, allowing control over the compositional complexity of reaction products. This offers a potential mechanism for bridging the gap between prebiotic chemical building blocks and the origin of life.
Article
Biochemical Research Methods
Luwei Zhang, Fuli Xin, Zhixiong Cai, Hong Zhao, Xiaolong Zhang, Cuiping Yao
Summary: The study developed a colorimetric strategy based on the MnO2 nanosheets-3,3',5,5'-tetramethylbenzidine (TMB)-glutathione (GSH) oxidative sensing system for the detection of ADA. This method can effectively and rapidly detect ADA additives in flour with a linear range of 10 to 400 mu mol L-1 and a limit of detection of 3.3 mu mol L-1.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Daniel S. Parsons, Antony Nearchou, Joseph A. Hriljac
Summary: A new cubic tin(II) germanate was synthesized and its crystal structure was determined to be analogous to a known tin(II) silicate. The tin(II) germanate showed high thermal stability and a tetragonal polymorph of tin(II) silicate was observed at low temperatures.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
J. R. C. Guimaraes, P. R. Rios, A. L. M. Alves
Summary: This study investigates the autocatalytic spread of martensitic transformation in FeNiC and FeNiMn alloys. The formal descriptions were reviewed, and the microstructural path concept was reintroduced. The model's analysis highlighted the significance of the martensite-austenite interaction. A comparison was made between the heterogeneous martensite nucleation in polycrystalline FeNiC and nucleation in Fe30Ni particulate alloy. A cluster of tetrakaidecahedral austenite grains could potentially describe the martensite spread in FeNiC.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jorge R. Robledo-Ortiz, Martin E. Gonzalez-Lopez, Denis Rodrigue, Juan F. Gutierrez-Ruiz, Fernando Prezas-Lara, Aida A. Perez-Fonseca
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2020)
Article
Biotechnology & Applied Microbiology
B. Clifton-Garcia, O. Gonzalez-Reynoso, J. R. Robledo-Ortiz, J. Villafana-Rojas, Y. Gonzalez-Garcia
LETTERS IN APPLIED MICROBIOLOGY
(2020)
Article
Materials Science, Composites
Jorge Ramon Robledo-Ortiz, Martin Esteban Gonzalez-Lopez, Alan Salvador Martin del Campo, Laura Peponi, Ruben Gonzalez-Nunez, Denis Rodrigue, Aida Alejandra Perez-Fonseca
Summary: The study aimed to produce lower-cost PLA-based biocomposites using agave fibers, with a chemical surface treatment improving morphology, flexural and tensile properties, and reducing porosity and water absorption. The treated fiber biocomposites showed better mechanical properties than neat LMDPE while being more eco-friendly.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Review
Chemistry, Applied
Martin Esteban Gonzalez-Lopez, Cesar Mario Laureano-Anzaldo, Aida Alejandra Perez-Fonseca, Martin Arellano, Jorge Ramon Robledo-Ortiz
Summary: The review explores the use of novel polysaccharide-based adsorbents in removing heavy metal Cr(VI), with chitosan and cellulose showing competitive adsorption capacities. The study also highlights the importance of sorbent reusability and continuous-flow adsorption for efficient removal of hexavalent chromium from polluted water streams.
SEPARATION AND PURIFICATION REVIEWS
(2021)
Article
Biotechnology & Applied Microbiology
Martin Esteban Gonzalez-Lopez, Aida Alejandra Perez-Fonseca, Martin Arellano, Cesar Gomez, Jorge Ramon Robledo-Ortiz
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2020)
Review
Polymer Science
Martin Esteban Gonzalez-Lopez, Alan Salvador Martin del Campo, Jorge Ramon Robledo-Ortiz, Martin Arellano, Aida Alejandra Perez-Fonseca
POLYMER DEGRADATION AND STABILITY
(2020)
Article
Engineering, Chemical
Rosa Gabriela Lopez GonzalezNunez, Roberto Carlos Vazquez-Fletes, Pedro Ortega-Gudino, Milton Oswaldo Vazquez-Lepe, Denis Rodrigue, Ruben Gonzalez-Nunez
Summary: The study showed that the addition of a compatibilizer in the melt blended compounds during rotational molding can lead to finer and better dispersed particles, resulting in improved mechanical properties. However, the compatibilizer was more effective in the compression-molded samples.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Polymer Science
Eduardo Ruiz-Silva, Mirleth Rodriguez-Ortega, Luis Carlos Rosales-Rivera, Francisco Javier Moscoso-Sanchez, Denis Rodrigue, Ruben Gonzalez-Nunez
Summary: Blends of PLA/LMDPE with different weight ratios were prepared using rotational molding and two mixing strategies, DB and MB. Thermal, morphological, and mechanical analyses showed that the blends' thermal stability, morphology, and mechanical properties were affected by the blending technique. DB generated larger particle sizes compared to MB, and blends with different PLA contents exhibited synergistic effects in tensile and flexural properties.
Article
Polymer Science
Caroline Andreuccetti, Tomas Galicia-Garcia, Fernando Martinez-Bustos, Raimundo Ferreira Grosso, Ruben Gonzalez-Nunez
Summary: This study used normal and acetylated starches and a blend of nopal mucilage and glycerol to prepare films, with acetylated starch samples showing higher elongation values and blown films exhibiting a 30% decrease in tensile strength compared to laminated films. Acetylation resulted in decreased solubility and decreased water vapor permeability in rice starch films, presenting a plasticized starch layer without unmelted starch granules.
INTERNATIONAL JOURNAL OF POLYMER SCIENCE
(2021)
Article
Materials Science, Composites
Roberto C. Vazquez Fletes, Erick O. Cisneros Lopez, Pedro Ortega Gudino, Eduardo Mendizabal, Ruben Gonzalez Nunez, Denis Rodrigue
Summary: The study investigated the addition of ground tire rubber into virgin polyamide 6 to produce thermoplastic elastomer blends, with a wide range of concentration possible. The results showed a decrease in tensile and flexural moduli and strengths with the addition of rubber, but significant increases in elongation at break and impact strength. An optimum rubber content around 75% weight was observed, achieving a balance between high recycled rubber content and sufficient matrix.
PROGRESS IN RUBBER PLASTICS AND RECYCLING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Valeria Figueroa-Velarde, Tania Diaz-Vidal, Erick Omar Cisneros-Lopez, Jorge Ramon Robledo-Ortiz, Edgar J. Lopez-Naranjo, Pedro Ortega-Gudino, Luis Carlos Rosales-Rivera
Summary: Agave fibers were utilized to produce biocomposites filled with polylactic acid filaments for 3D printing, affecting crystallinity, structure, and mechanical properties. Printing angle influenced morphology and impact strength of biocomposites, while increasing fiber concentrations had a negative effect on mechanical properties. The addition of agave fibers slowed down the disintegration of biocomposites under composting conditions compared to neat PLA.
Article
Polymer Science
Jorge R. Robledo-Ortiz, Alan S. Martin del Campo, Juan A. Blackaller, Martin E. Gonzalez-Lopez, Aida A. Perez Fonseca
Summary: In this study, sustainable biocomposites were produced using sugarcane straw as filler/reinforcement, and it was found that PLA, PHB, and PHBV biocomposites maintained the same impact strength as the neat matrices even with the addition of 40 wt.% of sugarcane straw. On the other hand, Green-PE biocomposites showed an increase in flexural and tensile modulus at all fiber contents.
Article
Engineering, Environmental
Martin Esteban Gonzalez-Lopez, Cesar Mario Laureano-Anzaldo, Aida Alejandra Perez-Fonseca, Cesar Gomez, Jorge Ramon Robledo-Ortiz
Summary: Cellulose beads loaded with graphene nanoplatelets were prepared using a physical gelation method and tested for the removal of Congo red dye. The adsorption equilibrium was described by Langmuir isotherm, with enhanced mass transfer kinetics using a differential column batch reactor. The presence of graphene nanoplatelets promoted faster kinetics and close to 100% adsorption efficiencies were achieved within a reasonably low time frame.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
M. E. Garcia-Sanchez, J. R. Robledo-Ortiz, I Jimenez-Palomar, O. Gonzalez-Reynoso, Y. Gonzalez-Garcia
REVISTA MEXICANA DE INGENIERIA QUIMICA
(2020)
Article
Chemistry, Applied
A. S. Martin del Campo, J. R. Robledo-Ortiz, M. Arellano, C. F. Jasso-Gastinel, J. M. Silva-Jara, E. J. Lopez-Naranjo, A. A. Perez-Fonseca
REVISTA MEXICANA DE INGENIERIA QUIMICA
(2020)
