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Ethanol dry reforming over ordered mesoporous Co-Zn composite oxide for syngas production
Feifei Li,Jiale Dong,Mingyue Wang,Xingtao Lin,Weijie Cai,Xianyun Liu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.7
This work is mainly concerned with the synthesis of Co-Zn nanocomposites by employing MCM-41 silicaas hard template (CoZnO-HT) and its catalytic behavior toward to CO2 reforming with ethanol. The physicochemicalfeatures of the as-prepared catalysts were probed through various characterization techniques, including XRD, TEM,BET, H2-TPR, and XPS. Indeed, CoZnO-HT catalyst possessed a highly ordered mesostructure with similarity toMCM-41 template and a higher specific surface area (304m2/g) compared to the reference CoZnO-C sample (4.75m2/g) prepared by the conventional impregnation method. Consequently, CoZnO-HT exhibited good performance at lowtemperature, and full ethanol conversion could be achieved at 550 oC as well as the negligible formation of byproductacetone. In addition, this catalyst depicted good stability and no obvious deactivation was observed after 40 h time onstream tests under the stoichiometric feed ratio. Indeed, superior specific surface area and efficient mass transportwithin the mesopores might be critical factors assigned to better activity and stability for CoZnO-HT.
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End-to-End Resource Reservation in IP Mobility Scenarios: A Survey
Xing Tao,Lin Hai 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.10
In order to provide guaranteed quality of service for real-time applications in the next IP-based mobile networks, end to end resource reservation should be executed. Two IETF protocols, RSVP and QoS NSLP, have been devised for resource reservation. But both of them are developed without considering mobility management protocols. Tremendous previous works have been carried out to extend these protocols to improve the performance when they are used in IP-based mobility scenarios for resource reservation. This survey provides a description and analysis of these previous works. We list some critical issues regarding resource reservation in IP-based mobility scenarios, and analyze the solutions proposed to address these issues. Also, we point out some opened issues that need to be resolved before resource reservation is widely used in mobility scenarios.
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