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Frontier of CO_(2)capture and conversion towards carbon neutrality

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Journal of Environmental Sciences 2024年第6期140卷 1-1页

作者： Tsunehiro Tanaka Qiang Wang Min Liu Zheng Wang tomas ramirez reina Department of Molecular Engineering Graduate School of EngineeringKyoto UniversityKyoto 6158510Japan College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Powder Metallurgy School of Physical and ElectronicsCentral South UniversityChangsha 410083China Laboratory of Atmospheric Environment and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Department of Chemical and Process Engineering Department University of SurreyGuildford GU27XHUnited Kingdom

With the rapid development of human civilization,the concentration of CO_(2)in the atmosphere has sharply increased in the past century,resulting in global temperature anomaly,extreme climate events,and eco-environmen... 详细信息

关键词： anomaly neutral sharply

Engineering heterogenous catalysts for chemical CO_(2) utilization:Lessons from thermal catalysis and advantages of yolk@shell structured nanoreactors

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Journal of Energy Chemistry 2021年第6期30卷 304-324,I0008页

作者： Cameron Alexander Hurd Price tomas ramirez reina Jian Liu DICP-Surrey Joint Centre for Future Materials Department of Chemical and Process EngineeringUniversity of SurreyGuildfordSurrey GU27XHUK State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

The development of catalytic materials for the recycling CO_(2) through a myriad of available processes is an attractive field,especially given the current climate *** there is increasing publication in this field,the reported catalysts rarely deviate from the traditionally supported metal nanoparticle morphology,with the most simplistic method of enhancement being the addition of more metals to an already complex *** catalysts,especially yolk@shell catalysts with hollow voids,offer answers to the most prominent issues faced by this field,coking and sintering,and further potential for more advanced phenomena,for example,the confinement effect,to promote selectivity or offer greater protection against coking and *** work serves to demonstrate the current position of catalyst development in the fields of thermal CO_(2) reforming and hydrogenation,summarizing the most recent work available and most common metals used for these reactions,and how yolk@shell catalysts can offer superior performance and survivability in thermal CO_(2) reforming and hydrogenation to the more traditional ***,this work will briefly demonstrate the bespoke nature and highly variable yolk@shell ***,this review aims to illuminate the spatial confinement effect and how it enhances yolk@shell structured nanoreactors is presented.

关键词： Yolk@shell CO_(2)utilization Reforming Hydrogenation Confinement effect

Conversion of CO_(2)to added value products via rWGS using Fe-promoted catalysts:Carbide,metallic Fe or a mixture?

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Journal of Energy Chemistry 2022年第3期31卷 635-646,I0017页

作者： Q iZhang Laura Pastor-Pérez Qiang Wang tomas ramirez reina Department of Chemical and Process Engineering University of SurreyGuildford GU27XHUnited Kingdom College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China

Fe-based catalysts are efficient systems for CO_(2)conversion via reverse water-gas shift(rWGS)***,the nature of the active phase,namely metallic iron,iron oxide or iron carbide remains a subject of debate which our paper is meant to ***0 is a much better catalyst for the rWGS than Fe_(3)*** activity of Fe0 can be promoted by the addition of Cs and Cu whose presence hinders iron carburisation while favouring both higher conversion and enhanced *** the samples are aged in the rWGS reaction mixture during stability test a new phase appear:Fe_(5)C_(2),resulting in a more active but less selective catalysts than Fe0 for the rWGS *** our results indicate that we could potentially achieve an optimal activity/selective balance upon finely tuning the proportion Fe/Fe_(5)C_(2).Beyond the fundamental information concerning active phase we have observed the presence of advanced Fischer-Tropsch-like products at ambient pressure opening new opportunities for the design of hybrid rWGS/Fischer-Tropsch systems.

关键词： CO_(2)conversion rWGS Fe carbide Fe catalysts Hybrid catalysts

Engineering morphologies of yttrium oxide supported nickel catalysts for hydrogen production

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Rare Metals 2023年第1期42卷 176-188页

作者： Rong-Bin Zhang Zi-Ao Tu Shuai Meng Gang Feng Zhang-Hui Lu Ying-Zhi Yu tomas ramirez reina Fei-Yang Hu Xiao-Han Chen Run-Ping Ye Key Laboratory of Jiangxi Province for Environment and Energy Catalysis Institute of Applied ChemistrySchool of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Chemistry Examination Department Patent OfficeChina National Intellectual Property AdministrationBeijing100088China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang330022China Department of Chemical and Process Engineering University of SurreyGuildfordGU27XHUK Department of Inorganic Chemistry and Materials Sciences Institute University of Seville-CSICSeville41092Spain

The catalytic performance is highly related to the catalyst ***,a series of Ni nanoparticles supported on Y_(2)O_(3) with different morphologies were successfully synthesized via hydrothermal process screening different pH *** Ni/Y_(2)O_(3)catalysts were applied to efficiently produce CO_(x)-free H2through ammonia *** identify a significant impact of Y_(2)O_(3)supports on nickel nanoclusters sizes and *** experimental results show that Ni/Y11 catalyst achieves 100% ammonia decomposition conversion under a gas hour space velocity(GHSV) of 12,000 ml·h^(-1)·gcat^(-1) and temperature of 650℃.Such a high level of activity over Ni/Y11 catalyst was attributed to a large specific surface area,appropriate alkalinity,and small Ni nanoparticles diameter with high dispersion.

关键词： Ammonia decomposition Hydrogen production Yttrium oxide morphology Ni catalysts Hydrothermal method

PET/CT and Hypo-Fractionated Radiotherapy of Patients with Head and Neck Cancer

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International Journal of Clinical Medicine 2018年第10期9卷 751-759页

作者： Misleidy Nápoles Morales Aldo Martínez ramirez Juan P. Oliva Glez Claudia González Espinosa Joaquín González González Carlos Fabián Calderón Marín Waldo Quesada Cepero Fanny López reina Rubén Elzaurdín Mora Department of Radiotherapy Institute of Oncology and Radiobiology Havana Cuba Nuclear Medicine Department and Molecular Imaging Institute of Oncology and Radiobiology Havana Cuba Radiotherapy Department Medical Researchers Center Havana Cuba

Positron emission tomography/Computer tomography (PET/CT) is a multimodality imaging diagnostic technique that analyzes the uptake and retention of different radiopharmaceuticals by cells providing metabolic information on biochemical processes. PET/CT has been used for radiotherapy planning, providing useful information to the Radio-oncologist about the localization, size and metabolic activity of tumor lesions. In this paper, we show advantages of the 18F-FDG PET/CT respect to simple CT imaging for target volume delineation in patients with diagnosis of Squamous Head and Neck Carcinoma that has been scheduled to undergo a hypofractionated radiotherapy treatment. On ten studied patients, the target volume defined from PET/CT images was less extensive than those defined from simple CT images. In six patients the target volume was significantly less extensive and in two of them a new lymph node disease was reported, re-staging and corresponding target volume was also delineated with less extensive margins from PET/CT images. A greater accuracy in delineating the volumes and improving the distribution of doses in the planning of the radiant treatment in these patients was possible, allowing a high precision in the delivery of the prescribed dose to the target volume diminishing the maximum dose to the adjacent healthy tissues. In conclusion we show that the use of 18F-FDG PET/CT was superior than the simple CT as the primary modality of imaging for hypofractioned radiotherapy treatment planning in patients with Squamous Head and Neck Carcinoma.

关键词： PET-CT Hypofractionated Radiotherapy Head and Neck Cancer