Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Ralf Zapf"'
Publikováno v:
Catalysts, Vol 14, Iss 2, p 104 (2024)
We report an investigation of catalyst performance for the decomposition of ammonia under industrially relevant conditions (high temperatures of up to 800 °C and an elevated pressure of 5 bar) with further emphasis on their stability at high reactio
Externí odkaz:
https://doaj.org/article/05f34b704c9345eb88fa0472970d4d92
Autor:
Kyatsinge Cedric Musavuli, Nicolaas Engelbrecht, Raymond Cecil Everson, Phillimon Modisha, Gunther Kolb, Ralf Zapf, Christian Hofmann, Dmitri Bessarabov
Publikováno v:
ChemEngineering, Vol 7, Iss 2, p 16 (2023)
The era of considering carbon dioxide (CO2) as a waste stream has passed. New methods of utilising CO2 as a carbon feedstock are currently the focus of extensive research efforts. A fixed-bed reactor containing a commercial Cu/ZnO/Al2O3 catalyst wash
Externí odkaz:
https://doaj.org/article/e10f155b824248eb9c86698d6f889ac3
Publikováno v:
Catalysts, Vol 12, Iss 10, p 1186 (2022)
Catalytic combustion of hydrogen and ammonia containing off-gas surrogate from an ammonia solid oxide fuel cell (SOFC) was studied with a focus on nitrogen oxides (NOx) mitigation. Noble and transition metals (Pt, Pd, Ir, Ru, Rh, Cu, Fe, Ni) supporte
Externí odkaz:
https://doaj.org/article/e230d5f14e4341298703a2c92faeb639
Publikováno v:
Catalysis Communications, Vol 149, Iss , Pp 106202- (2021)
For the combustion of methane, a partial replacement of platinum by rhodium leads to a significantly improved light-off behavior of the corresponding mixed Pt-Rh/γ-Al2O3 catalysts compared to a catalyst containing only Pt supported on γ-Al2O3. For
Externí odkaz:
https://doaj.org/article/f79325ac58774b7b8a45c300777fcd6a
Autor:
Núria J. Divins, Eduardo López, Inmaculada Angurell, Stefan Neuberg, Ralf Zapf, Gunther Kolb, Jordi Llorca
Publikováno v:
Catalysts, Vol 10, Iss 9, p 1028 (2020)
CO preferential oxidation (PROX) is an effective method to clean reformate H2 streams to feed low-temperature fuel cells. In this work, the PROX and CO oxidation reactions were studied on preformed Au nanoparticles (NPs) supported on TiO2 anatase. Pr
Externí odkaz:
https://doaj.org/article/98a6a64efff047449b8e21a1d5d80c83
Publikováno v:
Catalysts, Vol 10, Iss 5, p 493 (2020)
Carbon dioxide methanation was carried out over Ni-based catalysts on different supports and chelating ligands in microreactors. To investigate the influence of chelating ligands and supports, the Ni catalysts were prepared using different support su
Externí odkaz:
https://doaj.org/article/ace3295fe7df470da6fad3db6340bd8d
Publikováno v:
International Journal of Hydrogen Energy. 45:1658-1670
The effect of metal oxide (CeO2, Al2O3 and ZrO2) support and In2O3 co-supported Pt catalysts has been investigated on steam reforming of methanol in microreactors. CeO2, Al2O3 and ZrO2 were prepared by the sol-gel method and they were used as a suppo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8fd099319c702f93411bf29bccce2fe
https://doi.org/10.1016/j.ijhydene.2019.11.015
https://doi.org/10.1016/j.ijhydene.2019.11.015
Autor:
Gunther Kolb, Jochen Schürer, Martin Wichert, Ralf Zapf, Heike Valenteijn, David Tiemann, Steffen Keller, Stefan Neuberg
The current paper reports from development of an auxiliary power unit primarily dedicated for aviation purposes as additional energy source for different possible supply scenarios for passenger aircrafts not discussed in detail here. Three microstruc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f79b1e51bd7735d79234aaadbb324148
https://publica.fraunhofer.de/handle/publica/266886
https://publica.fraunhofer.de/handle/publica/266886
Autor:
Gunther Kolb, Ralf Zapf, Wojciech Gac, Witold Zawadzki, Magdalena Greluk, Helmut Pennemann, Vetrivel Shanmugam, Stefan Neuberg, Raphael Thiermann
Publikováno v:
Chemical Engineering & Technology. 42:2076-2084
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73d254590184045e990b5260949ae496
https://doi.org/10.1002/ceat.201900132
https://doi.org/10.1002/ceat.201900132
Publikováno v:
Applied Catalysis. B, Environmental, 226:226, 403-411. Elsevier
The influence of morphology and crystalline facets of nanoshaped ceria oxide support in Rh/CeO 2 and Rh/CeO 2/Al 2O 3 catalysts have been investigated by oxidative steam reforming of propylene glycol in microreactors at 630 °C at S/C = 3.5 and O/C =
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38c0442876e9eaab158a1794390c9674
http://www.scopus.com/inward/record.url?scp=85040017437&partnerID=8YFLogxK
http://www.scopus.com/inward/record.url?scp=85040017437&partnerID=8YFLogxK