Results 91 to 100 of about 4,417 (299)

CO2‐Assisted Hydrolysis of NaBH4: A Multi‐Function Platform for Enhanced Hydrogen Release, Regeneration of NaBH4, and CO2‐to‐CH4 Conversion

Advanced Science, EarlyView.
CO2 significantly accelerates hydrogen release from aqueous NaBH4 without metal catalysts, eliminating the need for downstream separation. Ball‐milling the hydrolytic products with Mg regenerates NaBH4 with yields exceeding 76% while simultaneously producing methane.
Rui Han, Stella Zhang, Yan Dai, Michael Scott, Brandon He, Sadegh Shabani, Oliver Hutt, Matthew David, Zhenguo Huang   +8 more
wiley   +1 more source

Bimetallic Ni-Fe Supported by Gadolinium Doped Ceria (GDC) Catalyst for CO2 Methanation

Bulletin of Chemical Reaction Engineering & Catalysis
CO2 conversion into fuels and high value-added chemical feedstocks, such as methane, has gained novel interest as a crucial process for further manufacturing multi-carbon products.
Anis Kristiani, Kaoru Takeishi, Siti Nurul Aisyiyah Jenie, Himawan Tri Bayu Murti Petrus   +3 more
doaj   +1 more source

Study of the Efficiency of a HT Power-to-Gas Process

Chemical Engineering Transactions, 2014
Power-to-Gas processes are investigated since they offer solutions for renewable energy storing and transportation. In the present study, an original Power-to-Substitute Natural Gas (SNG) process combining high-temperature steam electrolysis and CO2 ...
M. De Saint Jean, P. Baurens, C. Bouallou   +2 more
doaj   +1 more source

Lattice Distortion‐Driven Metal Exsolution in Perovskite Oxides

Advanced Science, EarlyView.
This study elucidates the mechanism of lattice distortion‐driven exsolution through a combination of computational simulations and experimental approaches. Lattice distortion facilitates the formation of oxygen vacancies and subsequent metal segregation, thereby enhancing the exsolution behavior.
Yo Han Kim, Uchan Jeon, Hyeongwon Jeong, Bo‐Ram Won, Jeong Woo Han, Jae‐ha Myung   +5 more
wiley   +1 more source

Two-step TSAR process for biogas upgrading: computational study of CO2 capture and catalytic methanation via reactive regeneration in a dual-function adsorber/reactor with conductive structured internals

Frontiers in Chemical Engineering
This work presents a novel two-step Temperature Swing Adsorption/Reaction (TSAR) process for biogas upgrading and CO2 valorization through reactive regeneration.
Luca Patron, Abdelrahman Mostafa, Gianpiero Groppi   +2 more
doaj   +1 more source

Operando Raman Spectroscopy Reveals Backpressure‐Controlled Dynamics in Diluted CO2 Electrolysis

Advanced Science, EarlyView.
High backpressure operation governs the CO2 reduction reaction (eCO2RR) kinetics and selectivity, as well as the CO2 and water dynamics, as revealed through operando Raman spectroelectrochemical measurement. Operating eCO2RR near diffusion‐limited conditions provides a platform for investigating the competition between eCO2RR and the hydrogen evolution
Muhammad Adib Abdillah Mahbub, Bashir Eid, Kinran Lau, Nini Zhang, Thomas Quast, Ann Cathrin Brix, Debanjan Das, Wolfgang Schuhmann   +7 more
wiley   +1 more source

Direct biogas methanation at moderate pressure: Mechanism investigation over Ni-based catalysts

Journal of CO2 Utilization
Direct upgrading of biogas by CO2 methanation aims to produce a gas to be injected into the grid. Operating at moderate pressures favors thermodynamics, but catalyst surface and reaction mechanism under realistic conditions are not well investigated.
Ilenia Giarnieri, Sining Chen, Daniel Ballesteros-Plata, Juan P. Holgado, Francesco Maluta, Alfonso Caballero, Francesca Ospitali, Enrique Rodríguez-Castellón, Giuseppe Fornasari, Andrew M. Beale, Patricia Benito   +10 more
doaj   +1 more source

Mn Modified Ni/Bentonite for CO2 Methanation

, 2018
To enhance the low-temperature catalytic activity and stability of Ni/bentonite catalyst, Ni-Mn/bentonite catalyst was prepared by introducing Mn into Ni/bentonite catalyst and was used for CO2 methanation.
Tongxia Huang, Xuan Luo, Xinling Xie, Lihui Dong, Hongbing Ji, Zuzeng Qin, Tongming Su, Cuixia Xu, Yuexiu Jiang, Bin Li   +9 more
core   +1 more source

Construction of Sabatier Volcanoes for CO2 Hydrogenation to C1‐2 Oxygenates Using Data‐Efficient Machine Learning

Advanced Science, EarlyView.
A new data‐efficient framework combining DFT calculations, a neural network model, and automated graph analysis of catalytic reaction networks is proposed and applied to CO2 hydrogenation on transition metal nanoparticles. The analysis shows how efficient C2 oxygenate production requires a balance between CHx formation, C–C coupling, protonation, and ...
Mikhail V. Polynski, Sergey M. Kozlov
wiley   +1 more source

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

, 2020
CO2 methanation has recently emerged as a process that targets the reduction in anthropogenic CO2 emissions, via the conversion of CO2 captured from point and mobile sources, as well as H2 produced from renewables into CH4. Ni, among the early transition
Maria A. Goula, Anastasios I. Tsiotsias, Nikolaos D. Charisiou, Ioannis V. Yentekakis   +3 more
core   +2 more sources