Results 41 to 50 of about 24,534 (223)

KI‐Doped α‐Mo2C Stably Catalyze Near‐Equilibrium CO2 to CO Beyond 1000 Hours

Carbon Energy, EarlyView.
Through iodine doping and effective stabilization of surface oxygen content, KI‐doped α‐Mo2C achieves a sustained equilibrium yield ratio of 0.95 over 1000 h at 400°C and 4 bar in reverse water–gas shift (RWGS) reaction. Furthermore, the catalyst has been successfully scaled up to the kilogram level, indicating considerable potential for industrial ...
Haipeng Wang, Chunshan Li, Zhiguo Lv, Tao Zhuang, Jinguang Hu, Fujin Sun, Chao Zhang   +6 more
wiley   +1 more source

Adsorptive Removal of Gaseous Methyl Iodide by Triethylenediamine Modified Activated Carbon Fiber

Yuanzineng kexue jishu, 2023
The rapid growth of the nuclear industry poses a great challenge for radioactive waste treatment. Volatile radioactive isotopes generated from uranium fission, especially gaseous iodine, attracted great attention due to their environment and health ...
WANG Lielin;LIU Feng;ZHAN Jie;SU Xingdong;CHEN Xiaojiang;LI Li;ZHOU Meiling;ZOU Hao;DING Congcong;XIE Hua
doaj  

Multiple carriers of Q noble gases in primitive meteorites [PDF]

, 2015
The main carrier of primordial heavy noble gases in chondrites is thought to be an organic phase, known as phase Q, whose precise characterization has resisted decades of investigation.
Amari, Brearley, Busemann, Clark, Crowther, Crozaz, Derenne, Gilmour, Gilmour, Goles, Gros, Guillaume Avice, Hewins, Hohenberg, Huss, Huss, Kellerud, Kerridge, Lewis, Lewis, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Mathew, Matsuda, Meshik, Meshik, Nicolas Estrade, Nishimura, Ott, Ozima, Piani, Ragettli, Tachibana, Verchovsky, Vogel, Wieler, Yves Marrocchi   +40 more
core   +2 more sources

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Climate Control of Iodine Isotopic Composition Evidenced by Argentine Entisols Records

Geophysical Research Letters
The long half‐life of 129I makes it useful for dating marine sediments aged 2–90 Ma. However, the lack of initial value dating hinders its application for dating terrestrial sediments.
Yukun Fan, Peng Cheng, Agustín Negri, Jianghu Lan, Xingxing Liu, Weijian Zhou, Qi Liu, Xiaolin Hou   +7 more
doaj   +1 more source

Experimental Measurements and Computer Simulation of Fission Product Gamma-Ray Spectra [PDF]

, 1997
Airborne gamma ray spectrometry using high volume scintillation detectors, optionally in conjunction with Ge detectors, has potential for making rapid environmental measurements in response to nuclear accidents. An experimental investigation and computer
Allyson, J.D., Cresswell, A., Department of the Environment, Transport and the Regions: Radioactive Substances Division, McConville, P., Sanderson, D.C.W.   +4 more
core  

The iodine-plutonium-xenon age of the Moon-Earth system revisited

, 2014
From iodine-plutonium-xenon isotope systematics, we re-evaluate time constraints on the early evolution of the Earth-atmosphere system and, by inference, on the Moon-forming event. Two extinct radioactivites (129I, T1/2 = 15.6 Ma, and 244Pu, T1/2 = 80 Ma)
Avice, Guillaume, Marty, Bernard
core   +3 more sources

Self‐Complementary Dimers Based on Zwitterionic Halogen Bond Donors

Chemistry – A European Journal, EarlyView.
In this study we present the first isolated zwitterionic homodimers based on halogen bonding (XB). After optimization of the structures by changing the Lewis base (LB) and the backbone, their dimerization was observed in gas phase, as well as, in solid state.
Dana Kutzinski, Raffaella Papagna, Elric Engelage, Lianne H. E. Wieske, Mate Erdelyi, Stefan M. Huber   +5 more
wiley   +1 more source

One‐Pot Amidation/C─H Halogenation by an Efficient Electrochemical Cascade

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
A sustainable electrochemical cascade enables the one‐pot synthesis of regioselectively halogenated N‐aryl amides from readily available amines and acyl halides under mild conditions. The method merges amidation and C─H halogenation in a single operational step, delivering broad substrate scope, high selectivity, and scalability, and provides an ...
Sudipta Ponra, Ruzal Sitdikov, Hasil Aman, Alyssio Calis, Gergely Laczkó, Virgile Rouffeteau, Maxime R. Vitale, Imre Pápai, Oscar Verho   +8 more
wiley   +2 more sources

Impact of (nano ZnO/multi-wall CNTs) prepared by arc discharge method on the removal efficiency of stable iodine 127I and radioactive iodine 131I from water

Scientific Reports
Radioactive iodine isotopes especially 131I are used for diagnosis and treatment of different types of cancer diseases. Due to the leak of radioactive iodine into the patient’s urine in turn, the wastewater would be contaminated, so it is worth preparing
Ahmed M. El-Khatib, I. I. Bondouk, Kh. M. Omar, Ahmed Hamdy, Mahmoud I. Abbas, M. El-Khatib, Sabbah I. Hammoury, Mona M. Gouda   +7 more
doaj   +1 more source