{"title":"Effects of Anthropomorphism of Environmental Mascots on Acceptance of Photovoltaic Power Generation","authors":"Satoshi Arai, Takahiro Matsunaga, Hiroki Hondo","doi":"10.3775/jie.102.120","DOIUrl":"https://doi.org/10.3775/jie.102.120","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139258066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"英文目次","authors":"","doi":"10.3775/jie.102.tce11_1","DOIUrl":"https://doi.org/10.3775/jie.102.tce11_1","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139257327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"和文目次","authors":"","doi":"10.3775/jie.102.tcj11_1","DOIUrl":"https://doi.org/10.3775/jie.102.tcj11_1","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139258884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hierarchical ZSM-5-Al2O3-TiO2-composite supported Pt, Ni and Mo sulfides catalysts were used for the dehydrocyclization-cracking of soybean oil at 1.0 MPa of hydrogen in the range 420-580 °C. Pt/NM/Z(24)75Ti(500sg) (N=Ni, M=Mo, Z=ZSM-5, 24=SiO2/Al2O3, 75=weight ratio, Ti=TiO2, 500=cal-cination temp. °C, sg=sol-gel method) and Pt/NM/Z(24)75Ti(600sg) prepared by the sol-gel method exhibited the higher activity in this reaction and the higher aromatics yields than the catalysts with single use of Al2O3 and TiO2 prepared by the kneading method. Further, Pt/NM/Z(24)30Al30Ti prepared by the kneading method and Pt/NM/Z(24)75Al(600sg) prepared by the sol-gel method exhibited the highest aromatics yield of 15% among the catalysts tested. The result indicated that the addition of TiO2 to the composite support would promote the interaction between molybdenum sulfide and TiO2, activate hydrogen and lead to enhanced cracking of ester group of triglyceride and cyclization of hydrocarbon fragments. When the sol-gel method was used, the catalysts with not only TiO2 but also Al2O3 exhibited the higher aromatics yields. Pt/NM/Z(24)75Ti(500sg) and Pt/NM/Z(24)75Ti(600sg) inhibited the formation of gaseous products while Pt/NM/Z(24)30Al30Ti and Pt/NM/Z(24)75Al(600sg) increased gaseous products, suggesting that the mechanism of aromatics formation might be different, and that the former would produce aromatics through the direct cyclization of longer-chained hydrocarbon fragments while the latter would produce them through gasification to C2-C4 olefins and the successive cyclization by the Diels-Alder reaction of olefins.
{"title":"Dehydrocyclization-cracking of Soybean Oil Using Pt/NiMo Sulfide Catalysts Supported on Hierarchical ZSM-5-Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub>-composite Prepared by Sol-gel Method","authors":"Yuuya HAYASHI, Tadanori HASHIMOTO, Atsushi ISHIHARA","doi":"10.3775/jie.102.110","DOIUrl":"https://doi.org/10.3775/jie.102.110","url":null,"abstract":"Hierarchical ZSM-5-Al2O3-TiO2-composite supported Pt, Ni and Mo sulfides catalysts were used for the dehydrocyclization-cracking of soybean oil at 1.0 MPa of hydrogen in the range 420-580 °C. Pt/NM/Z(24)75Ti(500sg) (N=Ni, M=Mo, Z=ZSM-5, 24=SiO2/Al2O3, 75=weight ratio, Ti=TiO2, 500=cal-cination temp. °C, sg=sol-gel method) and Pt/NM/Z(24)75Ti(600sg) prepared by the sol-gel method exhibited the higher activity in this reaction and the higher aromatics yields than the catalysts with single use of Al2O3 and TiO2 prepared by the kneading method. Further, Pt/NM/Z(24)30Al30Ti prepared by the kneading method and Pt/NM/Z(24)75Al(600sg) prepared by the sol-gel method exhibited the highest aromatics yield of 15% among the catalysts tested. The result indicated that the addition of TiO2 to the composite support would promote the interaction between molybdenum sulfide and TiO2, activate hydrogen and lead to enhanced cracking of ester group of triglyceride and cyclization of hydrocarbon fragments. When the sol-gel method was used, the catalysts with not only TiO2 but also Al2O3 exhibited the higher aromatics yields. Pt/NM/Z(24)75Ti(500sg) and Pt/NM/Z(24)75Ti(600sg) inhibited the formation of gaseous products while Pt/NM/Z(24)30Al30Ti and Pt/NM/Z(24)75Al(600sg) increased gaseous products, suggesting that the mechanism of aromatics formation might be different, and that the former would produce aromatics through the direct cyclization of longer-chained hydrocarbon fragments while the latter would produce them through gasification to C2-C4 olefins and the successive cyclization by the Diels-Alder reaction of olefins.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135665208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"和文目次","authors":"","doi":"10.3775/jie.102.tcj10_1","DOIUrl":"https://doi.org/10.3775/jie.102.tcj10_1","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135665206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"英文目次","authors":"","doi":"10.3775/jie.102.tce10_1","DOIUrl":"https://doi.org/10.3775/jie.102.tce10_1","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135665207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"英文目次","authors":"","doi":"10.3775/jie.102.tce9_1","DOIUrl":"https://doi.org/10.3775/jie.102.tce9_1","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"和文目次","authors":"","doi":"10.3775/jie.102.tcj9_1","DOIUrl":"https://doi.org/10.3775/jie.102.tcj9_1","url":null,"abstract":"","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haibo CHEN, Gen YOSHIDA, Fetra J. ANDRIAMANOHIARISOAMANANA, Ikko IHARA
Anaerobic digestate contains rich nutrients, such as nitrogen and phosphorus, which could be reused in microalgae cultivation. However, a clear growth medium is required for the cultivation to facilitate light permeable condition. The aim of this work was to investigate microalgae cultivation in electrochemically oxidized liquid digestate from coffee waste biomass. After removing the solid fraction of the digestate through microfiltration, the liquid digestate was treated by electrochemical oxidation using a boron-doped diamond anode. The liquid digestate (LD) and electrochemically oxidized liquid digestate (ELD) were used as media for microalgae cultivation.The effects of dilution from 5 to 20 times of the LD and reaction time from 1 to 5 h of the ELD on microalgae growth were also investigated. The results showed that the electrochemical oxidation had little influence on ammonium concentration in the digestate, whereas a color removal of up to 85% was observed. The ELD showed better microalgal growth performances than diluted LD, based on the data from optical density at 680 nm and cell density. The 10 times diluted, 2 h ELD achieved the best growth performance (additional optical density of 1.5 (-)) in all conditions. Our experiments proved that the ELD as a highly light permeable medium, better improved the growth performance of C. sorokiniana cultivation when compared with the LD medium.
{"title":"Microalgae Cultivation in Electrochemically Oxidized Anaerobic Digestate from Coffee Waste Biomass","authors":"Haibo CHEN, Gen YOSHIDA, Fetra J. ANDRIAMANOHIARISOAMANANA, Ikko IHARA","doi":"10.3775/jie.102.96","DOIUrl":"https://doi.org/10.3775/jie.102.96","url":null,"abstract":"Anaerobic digestate contains rich nutrients, such as nitrogen and phosphorus, which could be reused in microalgae cultivation. However, a clear growth medium is required for the cultivation to facilitate light permeable condition. The aim of this work was to investigate microalgae cultivation in electrochemically oxidized liquid digestate from coffee waste biomass. After removing the solid fraction of the digestate through microfiltration, the liquid digestate was treated by electrochemical oxidation using a boron-doped diamond anode. The liquid digestate (LD) and electrochemically oxidized liquid digestate (ELD) were used as media for microalgae cultivation.The effects of dilution from 5 to 20 times of the LD and reaction time from 1 to 5 h of the ELD on microalgae growth were also investigated. The results showed that the electrochemical oxidation had little influence on ammonium concentration in the digestate, whereas a color removal of up to 85% was observed. The ELD showed better microalgal growth performances than diluted LD, based on the data from optical density at 680 nm and cell density. The 10 times diluted, 2 h ELD achieved the best growth performance (additional optical density of 1.5 (-)) in all conditions. Our experiments proved that the ELD as a highly light permeable medium, better improved the growth performance of C. sorokiniana cultivation when compared with the LD medium.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giang T. T. LE, BoA KYUNG, Emma ROUYRE, Sakhon RATCHAHAT, Weerawut CHAIWAT, Tawatchai CHARINPANITKUL
Carbon nanotubes were produced via co-pyrolysis of a carbon source and catalytic metal nanoparticles. Utilization of molybdenum to iron impregnated catalyst was found to provide carbon nanotubes with superior graphitic carbon content at rather low pyrolysis temperature and higher CNT yield. In this work, a facile method to obtain Fe Mo impregnated catalyst was introduced, and eucalyptus oil was employed as main carbon source with an aim of utilizing bio-based and renewable feedstock. After impregnation and drying steps, ferrocene impregnated with molybdenum was employed for CNT synthesis without any further treatment. Repeated experimental results using Fe Mo impregnated catalyst revealed that CNT yield could be increased from 0.269 to 0.404 kg/kg when pyrolysis temperature was increased from 800 to 900 °C. Based on SEM, XRD, and Raman spectroscopic analyses, CNTs obtained from Fe Mo impregnated catalyst possessed higher graphitic content when compared to those obtained from pure ferrocene only. These results reveal a promising way to utilize FeMo impregnated catalyst for effective valorization of eucalyptus oil to produce CNTs.
{"title":"Facile Preparation of Fe Mo Impregnated Catalyst for Carbon Nanotube Synthesis from Eucalyptus Oil","authors":"Giang T. T. LE, BoA KYUNG, Emma ROUYRE, Sakhon RATCHAHAT, Weerawut CHAIWAT, Tawatchai CHARINPANITKUL","doi":"10.3775/jie.102.104","DOIUrl":"https://doi.org/10.3775/jie.102.104","url":null,"abstract":"Carbon nanotubes were produced via co-pyrolysis of a carbon source and catalytic metal nanoparticles. Utilization of molybdenum to iron impregnated catalyst was found to provide carbon nanotubes with superior graphitic carbon content at rather low pyrolysis temperature and higher CNT yield. In this work, a facile method to obtain Fe Mo impregnated catalyst was introduced, and eucalyptus oil was employed as main carbon source with an aim of utilizing bio-based and renewable feedstock. After impregnation and drying steps, ferrocene impregnated with molybdenum was employed for CNT synthesis without any further treatment. Repeated experimental results using Fe Mo impregnated catalyst revealed that CNT yield could be increased from 0.269 to 0.404 kg/kg when pyrolysis temperature was increased from 800 to 900 °C. Based on SEM, XRD, and Raman spectroscopic analyses, CNTs obtained from Fe Mo impregnated catalyst possessed higher graphitic content when compared to those obtained from pure ferrocene only. These results reveal a promising way to utilize FeMo impregnated catalyst for effective valorization of eucalyptus oil to produce CNTs.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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