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第385回化学システム工学専攻公開セミナー Partial Interzeolite Transformation for the Fabrication of Superior Catalysts for the Conversion of Bulky Molecules

日時
2023年2月13日(月)13:30-15:00
場所
工学部3号館6C06号室
Online participation
https://u-tokyo-ac-jp.zoom.us/j/81885584157?pwd=aVJTUW1mUXBnNkJETTRXQjRoczN2dz09
Meeting ID: 818 8558 4157
Passcode: 638349
講演題目Partial Interzeolite Transformation for the Fabrication of Superior Catalysts for the Conversion of Bulky Molecules
講演者Javier García-Martínez
Laboratorio de Nanotecnología, Molecular, Departamento de Química
Inorgánica, Universidad de Alicante, 03690 Alicante, Spain
https://nanomol.es/en/
概要nterzeolite transformation has been used to produce a novel family of hierarchical catalysts featuring excellent textural properties, strong acidity, and superior catalytic performance for the Friedel−Crafts alkylation of indole with benzhydrol, the Claisen−Schmidt condensation of benzaldehyde and hydroxyacetophenone, and the cracking of polystyrene [1].
Intermediate solids of the FAU interzeolite transformation into BEA display both increased accessibility due to the development of mesoporosity and strong acidity caused by the presence of ultrasmall crystals or zeolitic fragments in their structure. [2]
During the presentation, I will describe a new strategy for the synthesis of superior hierarchical catalysts, whose properties evolve during interzeolite transformation. They are composed of zeolitic fragments and display improved accessibility.
Because of these features, they effectively catalyze reactions involving large molecules.
We realized this strategy for the interconversion of FAU into BEA. Additionally, we used quaternary ammonium surfactants to develop well-defined mesoporosity in the intermediates.
By stopping the interconversion of FAU into BEA at different times, we were able to produce Interzeolite Transformation Intermediates (ITIs) showing optimized catalytic performance.
An important advantage of this strategy is that the physicochemical properties and, therefore the catalytic performance of the hierarchical catalysts can be finely tuned by simply stopping the interzeolite transformation at different times.
This creates countless opportunities for the development of hierarchical catalysts [3] with optimized properties and superior catalytic performance for those reactions in which zeolites present significant diffusion limitations.
Additionally, I will present a new approach we have developed for the fabrication of superior catalytic materials made out of building units from different zeolite structures by partial interzeolite conversion using a long chain quaternary amine, which acts both as a structure directing agent (SDA) and porogen (surfactant).
This method allows to control the amount of the different zeolitic building units in the final material and consequently to optimize its catalytic performance.
We realized this for the cracking of 1,3,5-triisopropylbenzene. Hybrid zeolites yielded a five-hold increase to the desired product at constant conversion over the commercial USY, CBV780, and a 7-fold increase in the conversion of this bulky molecule at constant selectivity over the MFI zeolite

[1] M. J. Mendoza-Castro, E.De Oliveira-Jardim, N.T. Ramírez-Marquez, C. A, N. Linares, J.García-Martínez, J. Am. Chem. Soc., 144(11) 5163–5171 (2022)
[2] G. Fleury, M. J Mendoza-Castro, N. Linares, M. BJ. Roeffaers, J. García-Martínez, ACS Materials Lett. 4 49–54 (2022)
[3] R. Jain, A. Chawla, N. Linares, J. García-Martínez, J.D. Rimer, Adv. Mater. 33(22), 2100897 (2021)
[4] M. J. Mendoza-Castro, Z. Qie, X. Fan, N. Linares, J. García-Martínez, Nature Communications (accepted)
世話人Raquel Simancas(内線 27368)

第384回化学システム工学専攻公開セミナー Catalyst Development for CO2 hydrogenation to C1 oxygenates

日時
2023年1月23日(月)15:00-16:30
場所
工学部5号館51号室
講演題目Catalyst Development for CO2 hydrogenation to C1 oxygenates
講演者Prof. Ning Yan
Dean’s Chair Associate Professor,
Head of Green Catalysis Lab
National University of Singapore
http://yan-group-nus.com/
概要This talk will mainly introduce our recent efforts in developing improved methanol synthesis catalyst from CO2. In the first work, we introduced an atomic Pd-promoted ZnZrOx solid solution catalyst, which shows enhanced rate of methanol and CO production compared to bare ZnZrOx. Up to 0.8 at.% Pd can be atomically dispersed in ZnZrOx, leading to more oxygen vacancies on the mixed oxide that foster methanol production. In the second work, we developed a strategy to promote ZnZrOx catalyst by incorporating hydrogen activation and delivery functions through optimized integration of ZnZrOx and Pd supported on
carbon nanotube (Pd/CNT). In CO2 hydrogenation to methanol, Pd/CNT+ZnZrOx exhibits drastically boosted activity and excellent stability over 600 h on steam test, showing potential for practical implementation. Lastly, we will briefly touch upon CO2 hydrogenation to formate, and a new concept “Green Chemical Farming” to convert CO2 to food components involving catalytic steps.
世話人高鍋 和広(内線21195)

第383回化学システム工学専攻公開セミナー 小分子転換反応のための規則性シリカ多孔体触媒の合成と触媒評価

日時
2023年2月22日(水) 15:00-17:00
場所
東京大学生産技術研究所
*Zoomハイブリッド設定あり
講演題目小分子転換反応のための規則性シリカ多孔体触媒の合成と触媒評価
講演者茂木堯彦(東京大学生産技術研究所・助教)
概要ゼオライトやメソポーラスシリカといった規則性シリカ多孔体材料は、ヘテロ原子の同型置換や金属の担持によって触媒として広く利用され、近年では小分子転換反応にも用いられている。
規則的な細孔構造に由来するユニークな触媒能が発現するが、一方で、活性点毎の構造・触媒能評価は難しい。
講演者は、これまでに小分子転換反応を指向した触媒開発を行うとともに、バルクとしての触媒性能だけでなく各活性点毎の触媒性能評価を行おうと試みてきた。
本講演では、講演者が生産技術研究所で実施してきた研究成果を紹介すると共に、シリカ多孔体触媒研究の今後の展望を述べる。
世話人小倉 賢(参加ご希望の方は世話人宛にご連絡ください)

第382回化学システム工学専攻公開セミナー PSE tools and methodologies for a carbon efficient food industry: Lessons from New Zealand

日時
2023年1月16日(月)14:30-15:30
場所
Zoomにて開催
https://u-tokyo-ac-jp.zoom.us/j/84344413976?pwd=TnA1dmtOWkdIeFFzZVB0S2JmaFVF UT09
講演題目PSE tools and methodologies for a carbon efficient food industry: Lessons from New Zealand
講演者Dr. Isuru Udugama
Senior Lecturer, University of Waikato
概要The Food industry in New Zealand faces two main challenges. Firstly, the government of New Zealand has set an ambitious goal of achieving net zero greenhouse gas emissions by 2050. This means conventional food processing plants (dairy, meat, fruit etc..) that currently operate using natural gas (and until recently coal) must be retrofitted to run on “non-carbon” sources. Secondly, the New Zealand industry has identified that environmental concerns, climate change and changes in societal perceptions mean the current method of global agriculture and food is ripe for disruption.
This seminar will provide the following specific examples related to the decarbonisation of current food industries. A cream cheese production process will be used to illustrate the need to “re-think” traditional plant operations concepts to account for added constraints and changes in priorities that can be brought on by decarbonisation. A multi-layered modelling concept is presented as a solution to manage the complex and multi-faceted decisions that involve the simultaneous consideration of shifting consumer behaviour, circular production goals, food safety and sensory quality demands.
This seminar will provide the following specific examples related to the development of future food industries. A LCA study will be presented on New Zealand’s main export which is powdered milk and the supposedly more carbon-friendly “precision fermented milk”. This will be followed by the discussion of a multi-scaled modelling concept to model, understand and scale up highly-complex precision fermentation processes that are central to creating key proteins that are found in milk at competitive prices at scale.
世話人杉山 弘和(内線27227)

第381回化学システム工学専攻公開セミナー Hybrid 2D-Material’s heterostructures for green H2 generation

日時
2022年12月21日(水)13:00-15:00
場所
工学部3号館32号室
講演題目Hybrid 2D-Material’s heterostructures for green H2 generation
講演者Praveen Kumar
Indian Association for the Cultivation of Science, Kolkata, India
概要Photoelectrochemical splitting of water into hydrogen and oxygen has been accepted as a sustainable way to utilize solar energy. Among several photoactive materials, 2D-Materials connected via van der Waals forces have gained tremendous attention as competent material for PEC HER as the most stable 2H phase (of MoS2) possesses good catalytic property comparable to noble metals, suitable band edge position, appropriate energy bandgap, and photochemical stability. Having all these salient features, 2D materials are still not being utilized to their maximum possibility for PEC HER due to the lack of an alternative way of basal plane activation. Further, growing vertical heterostructures of these 2D-materials on foreign substrates like GaN, Si is also one of the prime concerns to increase the active surface area and promote efficient charge separation & transport. I will also discuss our recent work on the spin manipulated photoelectrochemical water splitting using Janus 2D materials. In my talk, I will address some of these issues and also will discuss related successful recent innovations in our laboratory.
世話人高鍋 和広(内線21195)

第380回化学システム工学専攻公開セミナー The role of data in process systems engineering: towards the implementation of emerging technologies

日時
2022年12月20日(火) 13:00-14:30
場所
工学部5号館51号室
https://u-tokyo-ac-jp.zoom.us/j/84878989423?pwd=MlVpSE54OVdxa3hVOXJRc0ZWSndJ UT09
Meeting ID: 848 7898 9423
Passcode: 455748
講演題目The role of data in process systems engineering: towards the implementation of emerging technologies
講演者Sara Badr
東京大学大学院工学系研究科化学システム工学専攻 特任助教
概要The rise of data-driven tools is opening new doors for process systems engineering applications in terms of advancing process understanding and overcoming modelling obstacles. This can be especially beneficial for emerging technologies, where optimal design and the anticipation of operational difficulties can lead to faster and less costly implementation. Data-driven applications, however, often face challenges in terms of available data quantity and quality. Hybrid modelling platforms aim to overcome the challenges faced by both mechanistic and data-driven approaches and to capitalize on their combined strengths. In this talk, I will give examples of data-driven applications in the fields of carbon capture, and advanced biopharmaceutical manufacturing. I will also discuss the challenges facing the processing of industrial data and methods to maximize its potential usefulness. The role of hybrid models will also be discussed with examples of potential problem architectures and implementations.
世話人高鍋 和広(内線21195)

第379回化学システム工学専攻公開セミナー New layered precursors for new porous silicate frameworks

日時
2022年11月17日(木) 15:00-16:30
場所
工学部5号館55号講義室
https://u-tokyo-ac-jp.zoom.us/j/86046579802?pwd=Q2lJc1FvbThZSGNoSkhudFJVS29CQT09
Meeting ID: 860 4657 9802
Passcode: 085064
講演題目New layered precursors for new porous silicate frameworks
講演者Prof. Hermann Gies
(WRHI Specially Appointed Professor at Tokyo Tech)
https://www.wrhi.iir.titech.ac.jp/en/people/gies-hermann/#tab-01
概要Layered precursors have been used successfully for the “construction” of new porous silicate frameworks. Whether they occurred in hydrous layered silicates or as subunits in framework silicates, synthesis strategies have been developed to make use of the prearranged entity and build new 3-dimensional framework structures. Whether topotactic condensation, or ADOR, or IEZ are applied, new materials might be obtained. The limit, however, is the availability of appropriate precursor species. In the seminar I will show that there are new precursors available and first experiments proofed that new porous framework can be obtained.
世話人Raquel Simancas(内線:27368)

第378回化学システム工学専攻公開セミナー Bioenergy carbon capture and storage (BECCS): Absorption CO2 using aqueous potassium carbonate as absorption solvent

日時
2022年11月30日(水) 15:00-16:00
場所
工学部5号館51号講義室
https://u-tokyo-ac-jp.zoom.us/j/85726628397?pwd=QVpheTBKWG9PaEVlYVdlUlhTK05NUT09
Meeting ID: 857 2662 8397
Passcode: 878529
講演題目Bioenergy carbon capture and storage (BECCS): Absorption CO2 using aqueous potassium carbonate as absorption solvent
講演者Dr. Matthäus Bäbler
Associate Professor, Dept. Chemical Engineering, KTH Royal Institute of Technology.
概要Many European countries set the ambitious goal to become carbon neutral by mid-century. To achieve this goal a multitude of technological and societal advances are needed, including technologies that produce net-negative carbon emissions. The most prominent net-negative carbon emission technology is bio-energy carbon capture and storage (BECCS). BECCS involves the capture and storage of CO2 that is released when converting biomass for heat and power production. Since biomass is a renewable energy source, BECCS leads to negative carbon emission on a ~10-year time-scale (the time it takes for the biomass to grow). In Sweden, conventional power plants use biomass as feedstock which makes them prime candidates for the implementation of BECCS. Along this line, the main power plant operator in the city of Stockholm started a pioneering project to equip one of their heat-and-power plants with a carbon capture unit to collect up to 800 kt CO2/year. The captured CO2 will be liquefied and shipped to Norway for geological storage. The plan is to commission the full-scale capture unit by the end of 2025. Carbon capture from flue gas is preferentially done by absorption using a liquid solvent. Among the different solvents, aqueous potassium carbonate (K2CO3) was chosen for the capture process. K2CO3 has low regeneration energy, shows little degradation and is non-toxics. However, K2CO3 exhibits a slow absorption rate of CO2 which calls for the addition of rate promoters and/or catalysts that enhance the uptake of CO2.
In this seminar, I will report on our research on aqueous potassium carbonate as solvent for absorption of biogenic CO2. I will address various technical aspects such as lab scale experiments to evaluate and test different rate promoters; pilot plant tests done in collaboration with an industrial partner to explore real-world performance; and the challenges of monitoring and controlling an absorption plant.
世話人杉山 弘和(内線:27227)

第377回化学システム工学専攻公開セミナー Digitalizing Bioprocess development – Introduction to Genedata Bioprocess

日時
2022年11月17日(木) 15:00-16:00
場所
工学部3号館大会議室3(6B04号室)
工学部3号館31号講義室 (11月14日更新)
https://u-tokyo-ac-jp.zoom.us/j/81065616395?pwd=WmtZNTVSSzh4UWU1RUc1ckQzeVg3QT09
Meeting ID: 810 6561 6395
Passcode: 104467
講演題目Digitalizing Bioprocess development – Introduction to Genedata Bioprocess
講演者Mizue Hisano, PhD
(Scientific Business Consultant / Genedata AG)
概要While introducing the software "Genedata Bioprocess", talking about the underlying method and data environment, the challenges, and prospects of data utilization in the biopharmaceutical industry. Additionally talking about IP protection from the standpoint of IT Business. Genedata Bioprocess : The increasing number of biopharmaceutical development projects, combined with the application of more and more high-throughput technologies in cell line and bioprocess development, has led to a significant increase in the amount of data to be captured, processed, and analyzed. Genedata Bioprocess® is an E2E platform co-developed in close collaboration with leading biopharmaceutical companies that supports the entire bioprocess development workflow. The platform can be applied to antibodies (IgGs, novel bi- and multi-specific formats), as well as to other therapeutic proteins and cell therapeutics (e.g., engineered FVIII variants, fusion proteins, CAR-T, mRNA vaccine). It directly integrates with instruments, such as pipetting robots, bioreactors, control systems, and bioanalyzers. The platform’s query and reporting infrastructure enables integrated, informed decision-making throughout the process development workflow and comprehensive learning across different development campaigns and molecules.
世話人杉山 弘和(内線:27227)

第376回化学システム工学専攻公開セミナー 噴霧液滴を利用したMetal-organic frameworksの連続合成および複合化・薄膜作製

日時
2022年12月5日(月) 15:00-16:30
場所
場所:工学部3号館大会議室3(6B04号室)
https://u-tokyo-ac-jp.zoom.us/j/85263018436?pwd=VGE2TDJZZU1SU1VxOVQ4VEF2NDhGUT09
ミーティングID: 852 6301 8436
パスコード: 853426
講演題目噴霧液滴を利用したMetal-organic frameworksの連続合成および複合化・薄膜作製
講演者久保 優
広島大学 大学院先進理工系科学研究科 化学工学プログラム 助教
概要金属有機構造体(Metal-organic framework; MOF)は金属イオンと有機配位子から構成される多孔質材料であり、優れた細孔特性を有しているため、ガス貯蔵・分離、触媒、分子認識センサーなどへの応用が期待されている。MOFの社会実装のためには、低コストで簡便な大量生産手法が必要である。本講演では、講演者が新規合成法として開発した噴霧合成法によるMOFの連続合成と、噴霧液滴中でのMOFの急速な結晶生成を利用したナノ粒子との複合体形成および薄膜作製について、これからの研究展望も含めて紹介する。
世話人大久保達也、伊與木健太(内線27368)