Results 41 to 50 of about 1,504 (131)

Catalytic Conversion of 5‐(Chloromethyl)furfural in Water to 1‐Hydroxyhexane‐2,5‐Dione, α‐Angelica Lactone, and γ‐Valerolactone

ChemSusChem, Volume 19, Issue 11, 15 June 2026.
Renewable 5‐chloromethylfurfural (CMF), a more stable analog of HMF, was converted to 1‐hydroxy‐2,5‐hexanedione (HHD), a versatile intermediate toward cyclopentenones, pyrroles and aromatic compounds, via a cascade hydrolysis/hydrogenation reaction. α‐Angelicalactone was obtained as a side product. It was also possible to convert CMF to γ‐valerolactone,
Shasha Zheng, Ayu Afiqah Nasrullah, Soumyadeep Chakrabortty, Normen Peulecke, Sergey Tin, Johannes G. de Vries   +5 more
wiley   +1 more source

Changes of Soil Physical and Chemical Characteristics of Vertisol by Organic Matter and Sands Applications

Journal of Tropical Soils, 2023
Vertisol has a clay texture, high micropores, and high water and nutrient absorption ability. The high water content of Vertisol causes the air to decrease, thus inhibiting root development.
Wanti - Mindari, Purnomo Edi Sasongko, Setyo Budi Santoso   +2 more
doaj   +1 more source

A Nanocatalyst‐Based Approach to Sustainable HMF Oxidation

ChemCatChem, Volume 18, Issue 11, 15 June 2026.
Palladium nanoparticle colloid enables total HMF conversion with high selectivity toward FDCA (80%) under mild conditions, using air bubbling and a weak base. This simple catalyst also allowed elucidation of the HMF oxidation pathway and the role of the soluble base in the catalytic cycle, providing key insights for the design of future heterogeneous ...
Lénaïck Hervé, Franck Rataboul, Catherine Pinel, Amandine Cabiac, Adrien Mekki‐Berrada, Maria F. Espada, Laurent Djakovitch   +6 more
wiley   +1 more source

Fabrication of Cerium‐Doped Manganese Oxide Yolk‐Shell Microspheres for Selective Aerobic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran

ChemCatChem, Volume 18, Issue 12, 26 June 2026.
Cerium‐doped manganese oxide (CeMnOx) yolk‐shell microspheres, synthesized via microemulsion‐assisted redox precipitation, enable highly selective aerobic oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐diformylfuran (DFF). Optimal Ce/Mn ratio boosts surface oxygen mobility, achieving over 85% DFF yield.
Warinda Tirdtrakool, Hemmarat Kreethatorn, Pongpak Sataman, Wantana Klysubun, Soraya Pornsuwan, Thanthapatra Bunchuay, Jonggol Tantirungrotechai   +6 more
wiley   +1 more source

Selective Oxidation Strategies for Cost‐Efficient Green Hydrogen Production via Hybrid Water Electrolysis

Carbon Energy, Volume 8, Issue 6, June 2026.
Hybrid water electrolysis has emerged as a promising alternative to conventional electrolysis for sustainable hydrogen production. The economic potential of replacing water oxidation with organic substrates is assessed. For each substrate, representative electrocatalysts and mechanistic insights are reviewed to identify design principles for optimized ...
Conor Brennan‐Pollak, Lua Henderson, Cian Clarke, Maida A. Costa de Oliveira, Dídac A. Fenoll, Sreedhanya Pallilavalappil, Aswathy Babu, Shaista Jabeen, Pranav K. Gangadharan, Huabin Zhang, Suresh C. Pillai, Paula E. Colavita, Max García‐Melchor   +12 more
wiley   +1 more source

Humic fractions as support for the classification of high-mountain Organossolos in the southeast of Brazil [PDF]

Revista Brasileira de Ciência do Solo
Brazilian Soil Classification System (SiBCS) adopts a hierarchical approach to classify soils using specific diagnostic attributes. Organossolos (Histosols) class is differentiated according to its genesis, especially because the parent material is ...
Melania Merlo Ziviani, Luciele Hilda da Silva, João Pedro Comendouros Scott, Amanda Sales Alves, Luiz Alberto da Silva Rodrigues Pinto, Marcelo Souza Motta, Eduardo Carvalho da Silva Neto, Marcos Gervasio Pereira, Lúcia Helena Cunha dos Anjos   +8 more
doaj   +1 more source

Improved Constraints on Andean Glaciations From the Lake Titicaca Continental Drilling Record

Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract Long sedimentary records from tropical lakes provide crucial archives for reconstructing the timing and extent of tropical alpine glaciations, yet robust chronologies beyond the radiocarbon limit (ca. 50 ka) remain scarce. Here, we refine the ca. 350 kyr chronology for Lake Titicaca (Peru‐Bolivia) using radiocarbon dating, optically stimulated
Victoria L. Todd, Timothy M. Shanahan, Daniel Stockli, Axel K. Schmitt, Steven Forman, Sherilyn C. Fritz, Paul A. Baker, Geoffrey O. Seltzer   +7 more
wiley   +1 more source

From Wet Chemistry to Portable NIR: Robust High‐Throughput Compositional Models for Biomass Pretreatment

Journal of Chemometrics, Volume 40, Issue 5, May 2026.
ABSTRACT This study demonstrates a robust chemometric framework for high‐throughput compositional analysis of lignocellulosic biomass using a portable near‐infrared (NIR) spectrometer. Sugarcane bagasse solids produced by pressurized solvent fractionation (PSF) under batch and continuous conditions were analyzed to predict cellulose, hemicellulose, and
Julia M. M. Caetano, Stéphany Ribeiro, Montserrat Fortuny, Marco A. Salle‐Filho, Ivan R. de Barros, Luiz P. Ramos, Marcos L. Corazza, Alexandre F. Santos   +7 more
wiley   +1 more source

Pedogenesis in an Archaeological Dark Earth – Mulatto Earth Catena over Volcanic Rocks in Western Amazonia, Brazil

Revista Brasileira de Ciência do Solo, 2018
Archaeological Dark Earth (ADE) pedogenesis and pre-Columbian history are fundamental for understanding the biodiversity and pedodiversity of the Neotropical rainforest in the Amazon region.
Luís Antônio Coutrim dos Santos, Jane Kelly Silva Araujo, Valdomiro Severino de Souza Júnior, Milton César Costa Campos, Marcelo Metri Corrêa, Regilene Angélica da Silva Souza   +5 more
doaj   +1 more source

Efficient Hydrogenation of Furfural to Furfuryl Alcohol Using Cu‐Impregnated Chromium Silicate Catalysts in Ethanol Media

ChemistrySelect, Volume 11, Issue 17, 5 May 2026.
Efficient hydrogenation of furfural to furfuryl alcohol over a Cu‐impregnated mesoporous Cr‐silicate catalyst synthesized with PDADMAC, achieving complete conversion and 86% selectivity under mild ethanolic conditions. ABSTRACT A 10 wt.% Cu‐impregnated chromium silicate catalyst was synthesized via a sol–gel method followed by hydrothermal treatment ...
Vinicius L. Medeiros, Yuriy Lipisa, George W. Huber, José Geraldo Nery   +3 more
wiley   +1 more source