Blar i NTNU Open på forfatter "Chen, De"
-
Boosting the energy density of 3D dual-manganese oxides-based li-ion supercabattery by controlled mass ratio and charge injection
Zhou, Haitao; Wang, Xuehang; Sheridan, Edel; Gao, Hongquan; Du, Juan; Yang, Jianhong; Chen, De (Journal article; Peer reviewed, 2016)Supercabatteries, combining the energy of secondary batteries with the power of supercapacitors, have attracted significant attention in the energy storage research and market field. Herein, we continued our previous 3D ... -
Carbon Looping for Metallurgical Processes via Boudouard reaction over Magnetite
Kveinå, Maren Wassås (Master thesis, 2020)Utvikling av en effektiv og økonomisk gunstig teknologi for reduksjon av CO2 utslipp i metallindustrien er et mål for å oppnå et fremtidig lav-utslipp samfunn. Karbotermisk reduksjon av metalloksider produserer en ovngass ... -
Carbon nanotubes (CNT) for enhanced oil production from shales
Hussain, Aqeel (Master thesis, 2014)The shale gas production has brought a revolution in US energy market and the global prospect of shale gas production is on continuous increase. The advancements in hydraulic fracturing made it possible to extract very low ... -
Catalyst Development of Ethylene Oxychlorination to Ethylene Dichloride and Vinyl Chloride
Zhang, Wei (Doctoral theses at NTNU;2023:372, Doctoral thesis, 2023)Vinyl chloride monomer (VCM) is a critical component in the production of polyvinyl chloride (PVC), one of the most extensively used plastic polymers, through the polymerization process. The global VCM industry capacity ... -
Catalysts for electrochemical conversion of CO2 in aqueous solutions
Hjorth, Ida (Doctoral theses at NTNU;2017:82, Doctoral thesis, 2017)An artificial photosynthesis process can 1) utilise renewable energy from the sun, 2) facilitate convenient energy storage in chemical bonds, 3) supply feed-stock to the chemical industry, and 4) recycle CO2 in a CO2-neutral ... -
Catalytic combustion of methane over nickel cobalt based catalysts derived from hydrotalcite precursors.
Bakali-Hemou, Leyman Maleki (Master thesis, 2017)The bimetallic Ni-Co mixed oxide catalysts derived from hydrotalcite precursors were investigated for the catalytic combustion of methane in order to determine the kinetic of this oxidative reaction. The 5wt% metal loading ... -
Catalytic conversion of biomass
Calleja Aguado, Raquel (Master thesis, 2013)Catalytic processes for conversion of biomass to transportation fuels have gained an increasing attention in sustainable energy production. The biomass can be converted to fuels via three platforms, such as fast pylolysis ... -
Catalytic Conversion of Kerogen in Enhanced Oil Production from Shales
Sørensen, Tor Erik (Master thesis, 2016)Low oil prices, limited oil reserves and an anticipated increase in global energy demand calls for alternative sources of energy. Oil production from shales is an unconventional hydrocarbon source which is currently too ... -
Catalytic conversion of oxygenates to fuels
Torvik Jenssen, Astri Karin (Master thesis, 2015)A catalytic study of copper coated on silica CuSiO2, titanium dioxide, TiO2 with and without carbon nanotubes, CNT, as support material and zeolite, HZSM 5, has been performed for conversion of n-propanol into C9+ alkanes ... -
Catalytic partial oxidation of methane at moderate temperatures
Glas, Sophie Anne Amelie (Master thesis, 2013)Catalytic partial oxidation (CPO) is considered to be a promising route to produce synthesis gas from methane. In this work cobalt supported on CeO2−Al2O3 nanocomposites calcined at temperatures ranging from 1173 K to 1473 ... -
Catalytic upgrading of Biomass derived Oxygenate on Copper based Catalysts.
Hansen, Stine (Master thesis, 2017)Renewable production of propylene glycol (PG) has great interest. This can be produced from biomass derived chemicals instead of today s production, where PG is conventionally produced from petroleum derived chemicals. Acetol, ... -
Catalytic Vapor Upgrading of Fast Hydropyrolysis Biooil with Noble Metals Supported on Metal Oxides
Madsen Lager, Adrian (Master thesis, 2022)Environmental concerns and increased energy demand, has increased the need for sustainable fuel production using renewable feedstocks. Biomass has been identified as a potential net-zero CO2 emission and abundant raw ... -
Characterization and Thermal/Catalytic Upgrading of Kerogen in a Green River Oil Shale
Yeboah, Isaac (Master thesis, 2015)Comprehensive structural characterization of oil shale (kerogen) and subsequent upgrading to fuels are of paramount scientific and industrial importance, calling for a better understanding. In this work, an oil shale from ... -
Charge-Tuned CO Activation over a χ‑Fe5C2 Fischer−Tropsch Catalyst
Chen, Bingxu; Wang, Di; Duan, Xuezhi; Liu, Wei; Li, Yefei; Qian, Gang; Yuan, Weikang; Holmen, Anders; Zhou, Xinggui; Chen, De (Journal article; Peer reviewed, 2018)We performed DFT calculations to understand CO activation over a χ-Fe5C2 Fischer–Tropsch catalyst. The χ-Fe5C2 catalyst exhibits unique CO activation behaviors, and the BEP relation is nearly valid for this system. The ... -
Chemical Bonding and Electronic Properties of the Co Adatom and Dimer Interacting with Polyaromatic Hydrocarbons
Mahmoodinia, Mehdi; Åstrand, Per-Olof; Chen, De (Journal article, 2015)The density functional calculations presented here elucidate the nature of the interaction between the Co atom and dimer with a polyaromatic hydrocarbon (PAH). The results are analyzed in terms of structural, electronic, ... -
Chemocatalytic Conversion of Biomass Derivatives to Organic Acids: Process Optimization and Concept Process Design
Tingelstad, Petter (Master thesis, 2020)Katalytisk produksjon av organiske syrer fra biomassederivater kan åpne for alternative veier for kjemikalier som tidligere har blitt produsert av petroleumsprodukter. I denne masteroppgaven vil en litteraturstudie samt ... -
Cluster-size-dependent interaction between ethylene and CuCl2 clusters supported via γ-alumina
Qi, Yanying; Fenes, Endre; Ma, Hongfei; Wang, Yalan; Rout, Kumar Ranjan; Fuglerud, Terje; Marco, Piccinini; Chen, De (Peer reviewed; Journal article, 2020)Alumina-supported copper chloride serves as an industrial catalyst for ethylene oxychlorination, resulting from its high activity and selectivity. A better understanding of the detailed active site structure and reaction ... -
Cobalt/Manganese Oxide Nanoparticles for Enhanced Olefin Production in Fischer-Tropsch
Straume, Hanne Marie (Master thesis, 2015)The Fischer-Tropsch process for the production of fuels and chemicals from alternative carbon containing feedstocks have become of increasing interest in recent years. Special attention towards the the production of light ... -
Coke Formation on Pt–Sn/Al2O3 Catalyst for Propane Dehydrogenation
Wang, Haizhi; Sun, Lili; Sui, Zhi Jun; Zhu, Yi-an; Ye, Guanghua; Chen, De; Zhou, Xing-Gui; Yuan, Wei-kang (Journal article; Peer reviewed, 2018)Catalyst deactivation by coking is one major problem for propane dehydrogenation (PDH). To develop catalysts with high resistance to coke, the analysis of coke becomes essential. In this work, an analysis procedure is ... -
Comparison of novel olivine supported catalysts for high purity hydrogen production by CO2 sorption enhanced steam reforming
Acha, E; Chen, De; Cambra, J (Peer reviewed; Journal article, 2020)Seven Ni-based catalysts were prepared over different supports (conventional Al2O3, non-conventional olivine and hydrotalcite) with Co and Pd addition. Their catalytic performance was studied in hydrogen production by Steam ...