Browsing NTNU Open by Author "Chen, De"
Now showing items 41-60 of 192
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Conversion of Biomass to Aviation Fuel by Hydropyrolysis and Vapors Upgrading
Ali, Hammad (Master thesis, 2023)The world is moving towards more sustainable energy generation techniques and renewable energy sources, there has been a dire need for alternatives to come into play now and enormous studies have already been done for ... -
Cost-efficient core-shell TS-1/silicalite-1 supported Au catalysts: Towards enhanced stability for propene epoxidation with H2 and O2
Song, Zhaoning; Feng, Xiang; Sheng, Nan; Lin, Dong; Li, Yichuan; Liu, Yibin; Chen, Xiaobo; Chen, De; Zhou, Xinggui; Yang, Chaohe (Journal article; Peer reviewed, 2018)Designing cost-effective TS-1 with enhanced catalytic stability in direct propene epoxidation with H2 and O2 is attracting tremendous research interests. In this work, a novel hydrophobic TS-1/S-1 lamellar support with ... -
Critical review of catalysis for ethylene oxychlorination
Ma, Hongfei; Wang, Yalan; Qi, Yanying; Rout, Kumar Ranjan; Chen, De (Peer reviewed; Journal article, 2020)Ethylene oxychlorination is the key technology in vinyl chloride (VCM, the monomer of PVC, polyvinyl chloride) production to close the chlorine loop by consuming the HCl released from the former cracking step. Due to the ... -
Decoding atomic-level structures of the interface between Pt sub-nanocrystals and nanostructured carbon
Cheng, Hongye; Kvande, Ingvar; Zhu, Yi-An; Hammer, Nina; Rønning, Magnus; Walmsley, John; Li, Ping; Qi, Zhiwen; Zhou, Xing-Gui; Chen, De (Journal article; Peer reviewed, 2018)Gaining an insight into the interface structure resulting from the interaction between metal nanoparticles and their supports, particularly under relevant reaction conditions, has been an important topic in heterogeneous ... -
Dense integration of solvent-free electrodes for Li-ion supercabattery with boosted low temperature performance
Zhou, Haitao; Liu, Menghao; Gao, Hongquan; Hou, Dong; Yu, Chongchen; Liu, Chao; Zhang, Dong; Wu, Jian-Chun; Yang, Jianhong; Chen, De (Peer reviewed; Journal article, 2020)Supercabatteries combine the advantages of high power and energy density performances. However, the electrodes are always fabricated using high surface area materials and traditional slurry coating method containing the ... -
Density Functional Theory-Assisted Microkinetic Analysis of Methane Dry Reforming on Ni Catalyst
Fan, Chen; Zhu, Yi-An; Yang, Ming-Lei; Sui, Zhi-Jun; Zhou, Xing-Gui; Chen, De (Journal article; Peer reviewed, 2015)A comprehensive microkinetic model based on density functional theory (DFT) calculations is constructed to explore the reaction mechanism for dry methane reforming on Ni catalyst. Three low-index facets, namely, Ni(111), ... -
Design and setup optimization of ex-situ catalytic up-gradation of renewable biomass into fuel range hydrocarbons
Rajendran, Kishore (Master thesis, 2020)De raskt utarmende fossile brennstoffreservene og miljøpåvirkningen banet banen for alternative fornybare ressurser. Biodrivstoff skildrer en attraktiv mulighet til å erstatte konvensjonelle fossile brensler. Dette fører ... -
Development of Polyethylenimine (PEI)-impregnated mesoporous carbon spheres for low-concentration CO2 capture
Chen, Qingjun; Wang, Siyu; Rout, Kumar Ranjan; Chen, De (Journal article; Peer reviewed, 2020)A novel low-concentration CO2 capture material (PEI/MCS) was developed by loading polyethylenimine (PEI) over mesoporous carbon spheres (MCS) with high porosity. The effects of pore structure, PEI loading, capture temperature, ... -
Dolomite-based Sorbents for High Temperature Carbon dioxide capture.
Mawanga, Moses (Master thesis, 2017)The impact of doping with inert oxides on the long term performance of dolomite-based sorbents for high temperature CO_2 has been investigated in this work. Arctic dolomite was doped with with various oxides Al2O3, ZrO_2, ... -
Dual-function catalysis in propane dehydrogenation over Pt-1-Ga2O3 catalyst: Insights from a microkinetic analysis
Cheng, Q. Y.; Wang, K. Q.; Hu, P.; Sui, Z. J.; Zhou, Xinggui; Chen, De; Yuan, Wei-kang; Zhu, Yi-an (Peer reviewed; Journal article, 2020)The kinetics of propane dehydrogenation over single‐Pt‐atom‐doped Ga2O3 catalyst has been examined by combining density functional theory calculations and microkinetic analysis. The doping of Pt not only can improve the ... -
Effect of oxide additives on the hydrotalcite derived Ni catalysts for CO2 reforming of methane
Niu, Juntian; Liland, Shirley Elisabeth; Yang, Jia; Rout, Kumar Ranjan; Ran, Jingyu; Chen, De (Journal article; Peer reviewed, 2018)Here we provide new mechanistic and kinetic insights into the functions of oxides on Ni catalysts in methane dry reforming combining kinetic studies with density functional theory (DFT) calculations. Hydrotalcite derived ... -
Effect of trace potassium on hydrogen adsorption and dissociation on hcp cobalt: A density functional theory study
Chen, Qingjun; Svenum, Ingeborg-Helene; Gavrilovic, Ljubisa; Chen, De; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)Trace amounts of potassium (K) have a significant influence on the activity and selectivity of cobalt-based catalysts in Fischer–Tropsch synthesis (FTS), in which hydrogen adsorption and dissociation is one of the initial ... -
Effects of metal dusting relevant exposures of alloy 601 surfaces on carbon formation and oxide development
Guo, Xiaoyang; Vanhaecke, Estelle Marie M.; Vullum, Per Erik; Ma, Jianyu; Panditha Vidana, Daham Sanjaya Gunawardana; Walmsley, John; Chen, De; Venvik, Hilde Johnsen (Peer reviewed; Journal article, 2020)Ni and Fe are excellent catalysts for carbon formation, and industrial alloys are therefore susceptible to metal dusting corrosion; a costly issue in e.g. synthesis gas manufacture. The objective of this work is to better ... -
Effects of Oxygen Mobility in La-Fe-Based Perovskites on the Catalytic Activity and Selectivity of Methane Oxidation
Chang, Hui; Bjørgum, Erlend; Mihai, Oana; Yang, Jie; Lein, Hilde Lea; Grande, Tor; Raaen, Steinar; Zhu, Yi-an; Holmen, Anders; Chen, De (Peer reviewed; Journal article, 2020)The mechanism and structure requirements of selective and total oxidation of methane in a chemical looping process are both experimentally and theoretically examined on La1–xSrxFeO3−δ (x = 0, 0.2, and 0.5) and La0.5Sr0.5 ... -
Electrochemical syngas production from CO2 and water with CNT supported ZnO catalysts
Hjorth, Ida; Wang, Yalan; Li, Yahao; Buan, Marthe Emelie Melandsø; Nord, Magnue; Rønning, Magnus; Yang, Jia; Chen, De (Peer reviewed; Journal article, 2020)Electrochemical reduction of CO2 and H2O can provide a promising pathway to synthesis gas generation for renewable electric energy storage and fuel production with the closed anthropogenic carbon cycle. However, the lack ... -
Electronic Origin of Oxygen Transport Behavior in La-Based Perovskites: A Density Functional Theory Study
Zheng, Ya-Shan; Zhang, Min; Li, Qian; Zhu, Yi-An; Sui, Zhi-Jun; Chen, De; Zhou, Xing-Gui (Journal article; Peer reviewed, 2019)Understanding the oxygen transport behavior in perovskites is of central importance for tailoring their physical and chemical properties to various practical applications. In this contribution, periodic DFT+U calculations ... -
Electronic Structure, Stability, and Chemical Reactivity of Transition-Metal Catalysts Supported by Graphene Nanomaterials
Mahmoodinia, Mehdi (Doctoral theses at NTNU;2017:353, Doctoral thesis, 2017)Graphene, a 2D monolayer of graphite, has emerged as a novel material in many areas, such as catalysis and energy storage devices. Because of fascinating properties, such as remarkable surface area, superior electric ... -
Engineering Electronic Platinum–Carbon Support Interaction to Tame Carbon Monoxide Activation
Chen, Wenyao; Liu, Changwei; Lian, Cheng; Yu, Yaxin; Zhang, Xiangxue; Qian, Gang; Yang, Jia; Chen, De; Zhou, Xinggui; Yuan, Weikang; Duan, Xuezhi (Journal article; Peer reviewed, 2022) -
Engineering Three-Layer Core–Shell S-1/Ts-1@ Dendritic-Sio2 Supported Au Catalysts Towards Improved Performance for Propene Epoxidation with H2 and O2.
Song, Zhaoning; Yuan, Juncong; Cai, Zhenping; Lin, Dong; Feng, Xiang; Sheng, Nan; Liu, Yibin; Chen, Xiaobo; Jin, Xin; Chen, De; Yang, Chaohe (Peer reviewed; Journal article, 2020)The advocacy of green chemical industry has led to the development of highly efficient catalysts for direct gas-phase propene epoxidation with green, sustainable and simple essence. The S-1/TS-1@dendritic-SiO2 material ... -
Enhanced Catalytic Performance for Propene Epoxidation with H2 and O2 over Bimetallic Au–Ag/Uncalcined Titanium Silicate-1 Catalysts
Feng, Xiang; Yang, Jia; Duan, Xuezhi; Cao, Yueqiang; Chen, Bingxu; Chen, Wenyao; Lin, Dong; Qian, Gang; Chen, De; Yang, Chaohe; Zhou, Xinggui (Journal article; Peer reviewed, 2018)Gradually emerging environmental concerns have triggered the development of highly efficient catalysts for propene epoxidation with H2 and O2. Unfortunately, intensifying the activity and stability is still a challenging ...