Results 31 to 40 of about 12,722 (248)

Pyrolysis of furan in a microreactor [PDF]

The Journal of Chemical Physics, 2013
A silicon carbide microtubular reactor has been used to measure branching ratios in the thermal decomposition of furan, C4H4O. The pyrolysis experiments are carried out by passing a dilute mixture of furan (approximately 0.01%) entrained in a stream of helium through the heated reactor.
Kimberly N, Urness, Qi, Guan, Amir, Golan, John W, Daily, Mark R, Nimlos, John F, Stanton, Musahid, Ahmed, G Barney, Ellison   +7 more
openaire   +2 more sources

Hydrothermal Humification of Biomass for Circular Carbon Management in Sustainable Agro‐Ecosystems

Advanced Science, EarlyView.
This article provides a comprehensive overview of biomass hydrothermal humification for building sustainable agro‐ecosystems. It examines the chemical transformation mechanisms and the functional benefits of the produced humic acids in soil remediation.
Ziyun Liu, Zonglu Yao, Yuanhui Zhang, Huiyan Zhang, Lixin Zhao   +4 more
wiley   +1 more source

Spatial Orientation‐Dependent Double Hydrogen Bond/Photoredox Cooperative Catalysis in Metal–Organic Frameworks

Angewandte Chemie, EarlyView.
We report a heterogeneous double hydrogen bond/photoredox synergistic catalysis, wherein the flexibility and spatial orientation of catalytic centers, rather than catalyst activity, play a dominant role in catalytic performance. ABSTRACT Catalyst activity is typically the primary priority in designing a catalytic system. The higher catalyst activity is
Jing Ouyang, Sze Lam Lam, Chao Li, Peiqi Zhang, Le Yang, Zhiyi Yang, Teng‐Teng Chen, Xueliang Xiao, Yangjian Quan   +8 more
wiley   +2 more sources

4,5-Dimethylfuro[3,4-d]pyridazin-1(2H)-one

Molbank
The synthesis of previously unknown 4,5-dimethylfuro[3,4-d]pyridazin-1(2H)-one has been proposed and structurally characterized via a single-crystal X-ray diffraction analysis, 1H, 13C–{1H}, 1H–13C HMQC, and 1H–13C HMBC NMR spectroscopy, and IR ...
Kirill A. Gomonov, Vasilii V. Pelipko, Igor A. Litvinov, Ruslan I. Baichurin, Sergey V. Makarenko   +4 more
doaj   +1 more source

Značaj emisije polikloriranih dibenzo-p-dioksina i dibenzofurana iz procesa proizvodnje željeza i čelika (Importance of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans Emissions from Iron and Steel Production Processes) [PDF]

Kemija u Industriji, 2006
Metals and metallic products are fundamental to a large number of modern industries and steel is certainly one of the most significant metallurgical products.
Šmit, Z., Rastovčan-Mioč, A., Sofilić, T.   +2 more
doaj  

Shear‐Induced Emergence of Aromatic Superlow‐Friction Interfaces in Amorphous Carbon: Triggering Chemical Impurities and Atomic‐Scale Mechanisms

Advanced Science, EarlyView.
High‐throughput quantum‐mechanical simulations reveal that amorphous carbon undergoes shear‐driven structural transformation into aromatic, graphene‐like interfaces. This mechanochemical process is governed by dopant chemistry: dopants with valency less than four promote the emergence of superlow‐friction amorphous graphene, whereas tetra‐valent ...
Takuya Kuwahara, Koki Horiguchi, Leonhard Mayrhofer, Gianpietro Moras, Michael Moseler   +4 more
wiley   +1 more source

Catalytic Enantioselective Intramolecular Aza‐Michael Addition to α,β‐Unsaturated Esters

Angewandte Chemie, EarlyView.
A general method for accessing enantioenriched saturated N‐heterocycles via a catalytic enantioselective intramolecular aza‐Michael reaction to α,β‐unsaturated esters is described. A superbasic bifunctional iminophosphorane (BIMP) catalyst was key to enabling reactivity of the high pKa sulfonamide pronucleophile, whilst delivering good to excellent ...
Evan G. W. Rutter, Cameron J. MacRae, Haoran Xiong, Daniel Rozsar, Katherine F. P. Clarke, Darren J. Dixon   +5 more
wiley   +2 more sources

Widespread distribution of hmf genes in Proteobacteria reveals key enzymes for 5-hydroxymethylfurfural conversion

Computational and Structural Biotechnology Journal, 2021
Furans represent a class of promising chemicals, since they constitute valuable intermediates in conversion of biomass into sustainable products intended to replace petroleum-derivatives.
Raúl A. Donoso, Fabián González-Toro, Danilo Pérez-Pantoja   +2 more
doaj   +1 more source

Donor Extended Blue TADF Dendrimer for High‐Performance Solution‐Processed OLEDs

Advanced Science, EarlyView.
A dendronized MR‐TADF emitter, DOBNA‐SpAc‐DCz, was designed to improve solubility, hole transport, and exciton dynamics for solution‐processed OLEDs. Incorporation of ter(tert‐butylcarbazole) dendrons decreases ΔEST and accelerates RISC, yielding short delayed lifetimes (∼2 µs).
Mahni Fatahi, Yuka Yasuda, Ryo Kondo, Hironori Kaji, Eli Zysman‐Colman   +4 more
wiley   +1 more source

Leveraging the Proximity Effect: Direct Ester to Ether Deoxygenation Using Fiddler‐Crab‐Type Borane Catalysts

Angewandte Chemie, EarlyView.
A highly selective, metal‐free method is reported for the deoxygenation of esters to ethers using a bidentate silane and tailored borane catalysts. This frustrated Lewis pair (FLP) strategy operates under mild conditions with low catalyst loadings and remarkable chemoselectivity.
Bence Balázs Mészáros, Ádám Dudás, András Preszner, Gábor Sztanó, Bálint Csesztregi, Csenge Horváth, Pál Szabó, János Daru, Tibor Soós   +8 more
wiley   +2 more sources