Abstract of invited lectures

Special lecture

(1st Day, 8F/large-Hall, 16:45-17:45)
"Activity for international hydrogen supply chain"

Takashi YOSHIYAMA
(Senior Manager, Pilot Project Promotion Dept., Project Gr.,
Hydrogen Strategy Div., Kawasaki Heavy Industries, Ltd.)

Invited lectures

[Carbon neutality sess.] 1st Day, Room G
"Strategies for next-generation fuels to achieve a carbon-neutral society" (13:10-13:30)

Naoto NOBUSUE (Agency for Natural Resources and Energy, METI)

"Ammonia direct combustion" (14:00-14:30)

Hideaki KOBAYASHI (Tohoku Univ.)

Decarbonization of the energy sector is an urgent issue to address climate change. The advantage of ammonia, a carbon-free fuel with low storage and transportation costs for mass transportation from overseas, has been recognized, and there is an urgent need to establish a value chain from production and transportation to utilization. In particular, the development of ammonia direct combustion technology, in which ammonia is used as a fuel without decomposing it into hydrogen, is being promoted. In this presentation, the technology of ammonia direct combustion and the background in terms of combustion science will be explained.

"Synthetic fuel "e-fuel" produced from CO₂ and renewable hydrogen"

(14:40-15:10)

Shigeo SATOKAWA (Seikei Univ.)

"Expectations for the petroleum industry toward carbon neutrality viewed from plastic resource strategy" (15:10-15:40)

Toshiaki YOSHIOKA (Tohoku Univ.)

Securing recyclable resources and raw material resources, such as plastic recycling and the introduction of biomass plastics, has become a symbolic position of carbon neutrality. In this presentation, I will introduce the possibilities and expectations of the role played by the various technological processes that support the petroleum industry for the "3R + Renewable" plastic resource recycling strategy, with some research examples.

"Direction of activities of the Japan Petroleum Institute for carbon neutrality" (15:40-16:00)

Atsushi MURAMATSU (JPI, Tohoku Univ.)

[Natural resources exploration sess.] 1st Day, Room C
"Oil & gas development and carbon neutral (temporary)" (13:00-13:45)

Sumihiko MURATA (Kyoto Univ.)

[Equipment maintenance sess.] 1st Day and 2nd Day, Room F
"Development and advancement of wide-area leaked gas detection systems based on infrared measurement" (1st Day, 13:00-13:30)

Takahide Sakagami (Kobe Univ.), Seiichi Tsuzuki (Konica Minolta, Inc.)

This presentation will focus on the development and advancement of infrared-based wide-area leakage gas detection systems, with a report on the results of a NEDO project implemented over a five-year period from 2018 to 2022.

[Decarbonizing refineries sess.] 2nd Day, Room B
"A new technology of direct air capture with LNG coldeness" (10:15-10:45)

Koyo NORINAGA (Nagoya Univ.)

[Mercury removal sess.] 2nd Day, Room E
"Mercury in the environment -- perspective from the field work" (9:00-9:45)

Koyomi NAKAZAWA (Toyama Pref. Univ.)

[Polymer/Oligomer sess.】2nd Day, Room C
"New trends in bioplastics" (13:00-13:45)

Hiroshi UYAMA (Osaka Univ.)

Interest in biodegradable plastics has been growing since marine plastic wastes became a social problem. In addition, the spread of biomass plastics, which contribute to the prevention of global warming and the construction of circulating society, is also considered socially important. In this lecture, the recent development trends of bioplastics will be outlined, with a focus on biodegradable plastics.

"Creation of novel degradable polymer by molecular design" (14:00-14:45)

Hiroharu AJIRO (Nara Inst. Sci. & Tech.)

[Biomass utilization technology sess.] 1st Day, Room E
"The role of biomass as a renewable resource" (10:00-10:45)

Isao HASEGAWA (Kansai Univ.)

[Plastic recycle sess.] 2nd Day, Room F
"Chemical recycling of polyolefin: Progress report of NEDO-PJ" (13:00-13:30)

Masahiko MATSUKATA (Waseda Univ.)

In the NEDO project, a catalytic cracking process is being developed for chemical recycling of polyolefin-based waste plastics into petrochemical feedstock. In this presentation, we will propose a process that includes pretreatment for catalytic cracking, catalytic cracking reaction, and post-processing of the products.

"Advancement of chemical recycling in Europe and the United States and Japan's response" (13:30-14:00)

Isaburo FUKAWA (Asahi Research Center)

[Digital Technology Applications sess.] 2nd Day, Room D
"Process design of hydrogen carriars production applying meteorological data" (13:00-13:30)

Ryosuke ATSUMI (National Inst. Tech.)

[International sess.] 1st Day, 2nd Day, Room D

“Selective conversion of polycyclic aromatic hydrocarbons in petroleum”
(1st Day, 13:30～14:00)

Satoshi SUGANUMA (Hokkaido Univ.)

A new strategy for the conversion of heavy oil components into chemical feedstocks and fuels is proposed. First, alkyl polycyclic aromatic hydrocarbons in heavy oils are dealkylated to long-chain alkanes and polycyclic aromatic hydrocarbons without substituents. This allows the separation of oil components into alkanes (aliphatic hydrocarbons) and aromatic hydrocarbons. Since polycyclic aromatic hydrocarbons have limited applications, combination of partial hydrogenation and ring-opening can be used to convert them to benzene derivatives to increase the yield of chemical feedstocks. In this lecture, these strategies will be presented together with experimental results.

“Catalytic upcycling of plastic wastes into high value-added chemicals” (1st Day, 14:00～14:30)

Insoo RO (Seoul National Univ. of Sci. & Tech.)

Plastic is one of the most commonly used materials worldwide because of its versatile applicability, low cost, durability, and lightweight properties. According to the Organization for Economic Co-operation and Development (OECD) report released in 2022, only 9% of plastic waste is successfully recycled globally, and the majority of this waste is either incinerated (19%), landfilled (50%), or lost to the environment (22%). Globally, post-consumer plastics are predominantly recycled via mechanical recycling, in which the material is washed, cut, melted, and transformed into raw materials. However, mechanical recycling is typically accompanied by the degradation of plastic properties (downcycling). This talk will discuss an alternative way to recycle plastic waste into higher-value materials (upcycling) using catalysts.

“Breakthroughs in solid sorbents for CO₂ capture” (1st Day, 14:45～15:15)

Jeong Gil SEO (Hanyang Univ.)

Despite numerous efforts to decarbonize the energy sector, the rapid increase in CO₂ global emissions continues. Thus, the role of carbon capture and utilization in attaining net zero emissions remains indispensable. This presentation aims to summarize emerging sorbents and technologies for CO₂ capture. Among sorbents available for CO₂ capture, eutectic mixture (EM)-promoted MgO-based sorbents are focused on due to their high sorption capacities. In-situ TEM studies show that EM-MgO undergoes rearrangement and EM migration after multiple uses, resulting in poor cyclability and reusability. Several strategies such as the use of stabilizers, supports, and employing a core-shell morphology were thus employed to achieve stable cyclic performances. Finally, electric field-assisted CO₂ capture was found to increase sorption performance while decreasing temperature and energy requirements.

“Development of a hollow fiber membrane reactor for selective water removal in chemical reactions” (1st Day, 15:15～15:45)

Seok Ki KIM (Ajou Univ.)

The technology of selectively removing byproducts generated during chemical reactions has evolved in various forms, not only to increase yield through thermodynamic equilibrium shifting but also to extend catalyst lifespan and suppress undesired side reactions. However, most pervaporation membranes including zeolites, which lose their selectivity at higher reaction temperatures, had limitations for practical application. In this study, a polybenzoxazole polymer membrane was fabricated in a hollow fiber form and incorporated with a catalyst to develop a reactor for continuous water removal. This reactor was utilized in various reactions that generate water as a byproduct. The model reactions included reverse water-gas shift reaction, low-temperature methane oxidation reaction, and Fischer-Tropsch synthesis reaction, aiming to investigate how the effects of pervaporation membranes are manifested in each reaction.

“Development of molecular catalyst for CO₂ conversion and utilization”
(2nd Day, 9:45～10:15)

Ryoichi KANEGA (National Inst. Adv. Ind. Sci. & Tech.)

Catalyst development is actively pursued for the utilization of CO₂ as a resource and for the reduction of CO₂ emissions. The conversion of CO₂ generally requires high temperature and high pressure conditions. Hence, there is a need for catalysts that can function under ambient conditions to minimize energy consumption. In this presentation, novel molecular catalysts that have been developed for C₂ conversion and utilization with chemical and electrochemical reactions will be introduced.

“Design of various reactions and solid catalysts for utilization of lignocellulosic biomass” (2nd Day, 11:00～11:30)

Atsushi TAKAGAKI (Yokohama National Univ.)

Utilization of lignocellulosic biomass is one of the important issues to realize a carbon neutral society. We have conducted various catalytic reactions using heterogeneous catalysts. In biomass conversion, the type of reaction and catalyst design differ depending on the target substrate and desired product. Here, the various reactions we have studied, including selective synthesis in the liquid phase, reaction mechanism analysis in the gas phase, and mechanochemical reactions in the solid phase will be introduced.