Results 51 to 60 of about 8,577 (208)

Coal desulfurization [PDF]

, 1979
Organic sulfur is removed from coal by treatment with an organic solution of iron pentacarbonyl. Organic sulfur compounds can be removed by reaction of the iron pentacarbonyl with coal to generate CO and COS off-gases.
Hsu, G. C.
core   +1 more source

Hydrogen from Biogas: Dynamic Modeling of an Integrated Shift Reactor

Chemie Ingenieur Technik, Volume 97, Issue 11-12, Page 1041-1051, November 2025.
A dynamic, two‐dimensional shift reactor model for the production of hydrogen from biogas is presented. This shift reactor enables the preheating of the biogas feed and, in parallel, reduces fixed‐bed temperatures, resulting in increased hydrogen yields. The model is validated with measurement data from a pilot biogas steam reforming plant.
Edwin Hirtreiter, Andy Gradel, Hans‐Peter Schmid, Christopher Wünning, Sebastian Rehfeldt, Harald Klein   +5 more
wiley   +1 more source

Coke Decomposition Kinetic Model of Spent Hydrodesulfurization Catalysts [PDF]

Journal of Applied Sciences and Nanotechnology
Recycling residue hydrodesulfurization (HDS) catalysts is essential due to frequent deactivation. Petroleum coke's high ignition temperature and complex combustion behavior stem from its graphite-like structure and low volatile matter.
Aymen Zween, Zaidoon Shakor, Bashir Sherhan   +2 more
doaj   +1 more source

Transition Metal Carbide‐Based Catalysis for Thermocatalytic Conversion Processes: Properties, Synthesis, Applications, and Future Outlook

ChemNanoMat, Volume 11, Issue 11, November 2025.
Transition metal carbides (TMCs) have electronic structure similar to that of platinum group metals, making them attractive for thermocatalysis applications. This review explores several essential aspects, discussing physical and chemical properties of TMCs, synthesis methods, and their utilization in thermocatalytic processes, including generation of ...
Edris Madadian, Yasaman Ghaffari, Yael Zilberman, David S. A. Simakov   +3 more
wiley   +1 more source

Comparative Study of New Re-Ni-Mo/Al2o3 and Conventional Hydrodesulphurization Catalyst

Iraqi Journal of Chemical and Petroleum Engineering, 2015
New types of hydrodesulfurization (HDS) catalyst Re-Ni-Mo/ γ-Al2O3 was prepared and tested separately with two prepared conventional HDS catalysts (Ni-Mo/ γ-Al2O3 and Co-Mo//γ-Al2O3) by using a pilot plant hydrotreatment unit.
Abdul Halim A. Karim Mohammed, Hussein Qasim Hussein, Tariq M. Naife   +2 more
doaj  

Crude-specific Optimal Operation of Hydrodesulfurization

Chemical Engineering Transactions, 2021
Crude oil has different characteristics according to its origin, and this difference causes suboptimal operation if not considered. Similar to other refinery operations, hydrodesulfurization suffers from lacking this knowledge.
Esin Iplik, Ioanna Aslanidou, Konstantinos Kyprianidis   +2 more
doaj   +1 more source

Steaming of Hydrodesulfurization Catalysts

Journal of The Japan Petroleum Institute, 1970
Effects of steam-aging on the activity and physical properties of commercial hydrodesulfurization catalysts were studied under such conditions that the catalysts would be subjected to coke-burning regeneration in the commercial units. The steam-aging experiments were carried out using a 200cc autoclave under the conditions of 1-21kg/cm2-absolute and ...
Hideo Takaoka, Koichiro Iijima, Yukio Shibata, Satoru Itoh   +3 more
openaire   +2 more sources

Visualization of defect-induced excitonic properties of the edges and grain boundaries in synthesized monolayer molybdenum disulfide

, 2016
Atomically thin two-dimensional (2D) transition metal dichalcogenides (TMDCs) are attractive materials for next generation nanoscale optoelectronic applications.
Crumrine, W., Miller, A., Newaz, A. K. M., Pop, E., Redd, B., Smithe, K. K. H., Tuck, J. A., Wang, Bin, Yore, A. E.   +8 more
core   +2 more sources

Synthetic fabrication of nanoscale MoS₂-based transition metal sulfides [PDF]

, 2014
2009-2010 > Academic research: refereed > Publication in refereed journalVersion of ...
An, C, Wang, S, Yuan, J
core   +1 more source

Overcoming Stability Hurdles of Transition Metal Phosphides for H2 Evolution: A Review

ChemSusChem, Volume 18, Issue 20, October 23, 2025.
Developing durable electrocatalysts for water splitting remains a major challenge. This review examines strategies to enhance the long‐term stability of earth‐abundant transition metal phosphides for hydrogen evolution. It covers advances in material design and modification across pH conditions and includes stability analyzes in practical electrolyzer ...
Anelisse Brunca da Silva, Eduardo Arizono dos Reis, Caue Ribeiro, Lucia Helena Mascaro   +3 more
wiley   +1 more source