Zobrazeno 1 - 10
of 3 218
pro vyhledávání: '"Catalyst deactivation"'
Autor:
Tinnakorn Saelee, Pichayapong Sitthijun, Chinanang Ngamlaor, Nuttapat Kerdprasit, Meena Rittiruam, Patcharaporn Khajondetchairit, Juarez L. F. Da Silva, Nichakorn Buasuk, Piyasan Praserthdam, Supareak Praserthdam
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract One class of the Ziegler–Natta catalysts (ZNC) – the TiCl4/MgCl2 having triethyl aluminum (AlEt3), has been widely utilized during ethylene polymerization. Although the Ti species plays the role of a major active site, an increase of Ti
Externí odkaz:
https://doaj.org/article/758b032ba2384bd5a5423bfce2415325
Publikováno v:
Chemical and Biochemical Engineering Quarterly, Vol 38, Iss 2, Pp 125-143 (2024)
This study consists of four main parts. First, a heterogeneous reactor model was developed to simulate a diesel hydrodesulfurization (HDS) reactor with catalyst deactivation. Second, operating conditions were investigated. Third, the simulation resul
Externí odkaz:
https://doaj.org/article/79f603e3c162498fb06b17f2cf3b5f2b
Publikováno v:
Applied Catalysis O: Open, Vol 197, Iss , Pp 207016- (2024)
Low-temperature soot oxidation in catalytic diesel particulate filters (DPF) is important for maintaining high efficiency of heavy-duty vehicles. This can be achieved by coating DPFs with an oxidation catalyst. In this work, catalytic DPFs have been
Externí odkaz:
https://doaj.org/article/7c95a2cd06a44caa9f6d6dfe152143ef
Publikováno v:
Fuel Processing Technology, Vol 267, Iss , Pp 108170- (2025)
Catalyst deactivation and regeneration are critical aspects of heavy oil hydroprocessing. This review provides a comprehensive overview of the factors contributing to catalyst deactivation, including coke formation, metal and other heteroelement pois
Externí odkaz:
https://doaj.org/article/c6db84c727dc47b4a69f32b734ff13b9
Autor:
Jayson Fals, Maria L. Ospina-Castro, Andrea Ramos-Hernández, Leonardo Pacheco-Londoño, Sonia Bocanegra
Publikováno v:
Heliyon, Vol 10, Iss 18, Pp e37813- (2024)
This study investigated the deactivation and regeneration of hierarchical zeolites in vacuum gas oil conversion, aiming to reach the equilibrium state seen in fluidized bed catalytic cracking (FCC). The research utilized various characterization tech
Externí odkaz:
https://doaj.org/article/56ddbee7fce043768e016791fa4644c2
Catalytic performance of desilicated HZSM-12 for benzylation reaction of benzene with benzyl alcohol
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 30, Iss 1, Pp 1-10 (2024)
The catalytic production of diphenylmethane from the reaction of benzene with benzyl alcohol was investigated using HZSM-12 and desilicated HZSM-12 that was obtained by treating ZSM-12 with 0.2M NaOH solution at 85 °C for 60 min. The untreated and a
Externí odkaz:
https://doaj.org/article/e5a66cf42fe34e388cfcf8dfb0ae26c8
Autor:
Tanmayi Bathena, Truc Phung, Vijayakumar Murugesan, Konstantinos A. Goulas, Ajay S. Karakoti, Karthikeyan Ramasamy
Publikováno v:
Journal of CO2 Utilization, Vol 84, Iss , Pp 102848- (2024)
Extensive research efforts have been devoted to using greenhouse gas CO2 in upgrading bio-derived feedstock to value-added chemicals using the oxidative dehydrogenation route (CO2-ODH) with low-energy input. To realize the effective deployment of CO2
Externí odkaz:
https://doaj.org/article/89e5faf13d6d4776b00ec58300b9d081
Publikováno v:
Bulletin of Chemical Reaction Engineering & Catalysis, Vol 18, Iss 4, Pp 675-687 (2023)
A surfactant-assisted co-precipitation method was used to prepare the catalysts Co,Ni,Pd/CaO, Co,Ni,Pd/Ca0.97La3+0.03O, Co,Ni,Pd/Ca0.93La3+0.07O, and Co,Ni,Pd/Ca0.85La3+0.15O (1% each of Co, Ni, and Pd). La2O3 doping effect on the activity and stabil
Externí odkaz:
https://doaj.org/article/55ae35b1c30b427ca1c3037c6428f48a
Publikováno v:
Тонкие химические технологии, Vol 18, Iss 4, Pp 341-354 (2023)
Objectives. To take into account the change in the number of active sites during the adsorptioncatalytic deformation and deactivation of a catalyst surface by means of a catalytic poison when calculating the turnover frequency (TOF) of a hydrogenatio
Externí odkaz:
https://doaj.org/article/6af4c6cb7112492cba05a28ec52e61e0
Publikováno v:
Toxics, Vol 12, Iss 9, p 681 (2024)
Catalytic ozone oxidation, which is characterized by strong oxidizing properties and environmental friendliness, has been widely used in organic wastewater treatments. However, problems such as a low organic pollutant removal efficiency and unstable
Externí odkaz:
https://doaj.org/article/0e783ae522ec407d848ddc2f53fe904d