Results 51 to 60 of about 4,290 (226)

Understanding catalyst deactivation in an industrial green hydrotreater and its correlation with catalyst composition

Fuel Processing Technology
Understanding and mitigating catalyst deactivation is crucial for enhancing the efficiency of hydrodeoxygenation (HDO) processes in the production of biofuels.
Elham Nejadmoghadam, Abdenour Achour, Olov Öhrman, Derek Creaser, Louise Olsson   +4 more
doaj   +1 more source

Hydroxyl Self‐Trapping Strategy Enables Electrocatalysis at Ampere‐Level Current Densities: Kinetics‐Driven Lattice Oxygen Activation for Cl−‐Rich Alkaline Water Electrooxidation

Carbon Energy, EarlyView.
This study designs a CrOx‐engineered Ni‐based catalyst enabling efficient and stable seawater electrolysis. The catalyst utilizes a dynamic interfacial barrier that selectively adsorbs OH− to repel Cl− corrosion while activating lattice oxygen‐mediated pathways.
Rui Liu, Hui Kan, Xiangdong Ma, Shan Yue, Jiayi Gao, Mingjing Zhao, Haijiao Xie, Xiaohong Xia   +7 more
wiley   +1 more source

Hydroprocessing of synthetic kerosene over a non‐sulphided Ni/Al2O3 catalyst: Impact of alcohols and ketones on alkene conversion

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Synthetic jet fuel containing non‐petroleum‐derived kerosene can be produced from synthetic kerosene obtained through processes that include a hydroprocessing step. The potential use of non‐sulphided (reduced) nickel supported on alumina (Ni/Al2O3) was evaluated as an alternative to sulphided catalysts to saturate alkenes in sulphur‐free ...
Garima Chauhan, Felix Link, Cibele Melo Halmenschlager, Arno de Klerk   +3 more
wiley   +1 more source

Role of the solvent evaporating temperature on the NiMo/TiO2-Al2O3 catalyst and the hydrodesulfurization performance for 4,6-dimenthyldibenzothiophehe

Chemical Engineering Journal Advances, 2022
Binary TiO2-Al2O3 serial composites(TA-x) and the NiMo supported catalysts(NiMo/TA-x) were successfully synthesized at different solvent evaporation temperatures,.
Guangheng Wang, Zegao Zhao, Wenwu Zhou, Zhiping Chen, Anning Zhou, Yating Zhang, Xingyu Yang, Fei Yao   +7 more
doaj   +1 more source

Kinetics of hydrodeoxygenation of octanol over supported nickel catalysts: a mechanistic study [PDF]

, 2014
The hydrodeoxygenation (HDO) of 1-octanol as a model aliphatic alcohol of bio-oil was investigated in a continuous down-flow fixed-bed reactor over γ-Al2O3, SiO2, and HZSM-5 supported nickel catalysts in the temperature range of 488–533 K.
Maity, Sunil Kumar, Palla, V C S, Shee, Debaprasad   +2 more
core   +1 more source

Beyond hydrogen: Process design of a biogas steam reformer for Fischer–Tropsch synthesis

The Canadian Journal of Chemical Engineering, EarlyView.
The effect of pressure and steam to carbon ratio on carbon conversion. Abstract We present an analysis of a pilot‐scale multi‐tubular biogas steam reforming reactor, part of a sustainable aviation fuel (SAF) development project in Brazil. The novelty of this work is the application of a new, validated power law kinetic model, specifically developed for
Rafael Belo Duarte, Rafael Dei Tós Barreto, João Lourenço Castagnari Willimann Pimenta, Luiz Mario de Matos Jorge   +3 more
wiley   +1 more source

Bio-phenols production via hydrodeoxygenation of lignin-derived guaiacol and bio-oil over high water-tolerant NiMo/Al2O3-ZrO2 catalysts

Cleaner Engineering and Technology
Transformation of some oxygenated compounds in bio-oil derived from biomass pyrolysis via hydrodeoxygenation (HDO) generally improves its quality and potentially produces bio-based chemicals.
Surachet Hongkailers, Supanut Phumpradit, Chanisara Phanpa, Adisak Pattiya, Chawalit Ngamcharussrivichai, Toshiyuki Yokoi, Napida Hinchiranan   +6 more
doaj   +1 more source

Maximizing utilization of reactivated and left-over catalysts in heavy gas oil hydrotreater: A case study of ADNOC Refining

Oil & Gas Science and Technology, 2018
Recently, ADNOC Refining Research Center (ARRC) has studied the possibility to maximize the reutilization of left-overs and reactivated hydrodesulfurization catalysts for one of its hydrotreater producing Ultra Low Sulfur Diesel (ULSD) from Heavy Gas Oil
Laveille Paco, Chaudhry Abdul-Hamid, Riva Alessandro, Salameh Alain, Singaravel Gnanapragasam, Dufresne Pierre, Morin Stephane, Berthod Mikael   +7 more
doaj   +1 more source

Mesoporous Alumina Supported NiMo Catalysts for Residue Conversion

Procedia Earth and Planetary Science, 2015
AbstractMesoporous alumina catalyst supports with high surface area (upto458m2/g) and pore volume (upto1.55cm3/g) have been synthesized through Sol-gel process using non-ionic block copolymers as a template. Nitrogen gas adsorption, FT-IR and transmission electron microscopy were performed to determine the structure of these synthesized materials ...
Kohli, Kirtika, Prajapati, Ravindra, Sau, Madhusudan, Maity, Samir K.   +3 more
openaire   +1 more source

Interfacial and Ligand Dual Engineering Toward Energy‐Saving Hydrogen Production Coupled with Sulfion Degradation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Using a coordinated regulation strategy of interface and ligand, we developed a nickel cobalt sulfide/carboxylate ligand‐modified nickel cobalt hydroxide composite (NiCo‐S/NiCo‐OH‐CL) with abundant heterointerfaces. Owing to the porous network, sulfur‐repellent hydrophilic surface, and dual electronic structure regulation, the coupled electrolysis ...
Jinghui Guo, Min Zhou, Yang Shen, Guo Yu, Qijun Wang, Heyan Yu, Leyuan Wang, Feng Wang, Wei Yang, Hairen Wang, Yu Ding, Yan Zhao, Zhaoyang Wang   +12 more
wiley   +1 more source