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Toshiyuki Furuya, Kazuki Kawabe, Masahiko Yamagishi, Takayoshi Ono, Ta ...
Session ID: S04
Published: 2011
Released on J-STAGE: July 17, 2011
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A new process for the production of mono-ethylene glycol (MEG; HOCH
2CH
2OH) was developed by Mitsubishi Chemical Corporation. While the MEG selectivity of conventional non-catalyzed process is around 89% under typical conditions, that of the new process exceeds 99%. The key of the high selectivity is the two-step synthesis via ethylene carbonate. The first step reaction is catalyzed by the catalyst and generates ethylene carbonate as an intermediate. This is followed by hydrolysis of ethylene carbonate in the second step. Several commercial plants of the new process have already been operated world-wide.
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Hideaki Hamada
Session ID: S05
Published: 2011
Released on J-STAGE: July 17, 2011
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Catalytic NOx removal reactions recently developed by our group are reviewed. Following NO decomposition, selective reduction of NO with hydrocarbons was reported, for which we first found the activity of solid acid base materials such as alumina. Research on the reaction mechanism showed the importance of NO
2 and partially-oxidized hydrocarbons as reaction intermediates. The activity of alumina for the reaction was promoted by using additives and appropriate preparation methods. Also, practical NOx removal system was developed using alumina catalyst and methanol reductant. Then, silica-supported Ir catalyst was found to show excellent performance for the selective reduction of NO with H
2 or CO in the presence of SO
2. The activity of Ir/SiO
2 for NO reduction with CO was promoted by addition of basic materials and W. The catalyst also showed good performance for NOx removal for actual diesel exhaust.
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Shigeyuki Mori
Session ID: S06
Published: 2011
Released on J-STAGE: July 17, 2011
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Lubricants are one of the important products from petroleum. Safety, reliability and long life of vehicles and machines can be realized by advanced lubricants. Efficiency of engines is also supported by good lubricants. We focused on the lubrication mechanism on the bases of surface chemistry. Especially, in situ observation of lubricating films was carried out with a micro-FTIR and the effect of high pressure on the chemical structure of lubricant components was observed. The chemical nature of nascent surface formed by mechanical contacts was investigated in a high vacuum chamber with a quadrupole mass spectrometer. TOF-SIMS was applied to characterize boundary lubrication films to understand boundary lubrication phenomena.
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Kohji Omata
Session ID: A01
Published: 2011
Released on J-STAGE: July 17, 2011
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Xiaodong Yi, Toru Murayama, Wataru Ueda
Session ID: A02
Published: 2011
Released on J-STAGE: July 17, 2011
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Toru Murayama, Xiaodong Yi, Nozomi Kuramata, Syoko Izumi, Wataru Ueda
Session ID: A03
Published: 2011
Released on J-STAGE: July 17, 2011
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Kotaro Ishiguro, Wataru Ikeda, Masatoshi Nagai
Session ID: A04
Published: 2011
Released on J-STAGE: July 17, 2011
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Kohsuke Mori, Isamu Tanimura, Hiromi Yamashita
Session ID: A05
Published: 2011
Released on J-STAGE: July 17, 2011
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Chiaki Ideta, Takuji Ikeda, Katsutoshi Yamamoto
Session ID: A06
Published: 2011
Released on J-STAGE: July 17, 2011
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Hiroyuki Imai, Toshiyuki Yokoi, Junko Nomura, Takashi Tatsumi
Session ID: A07
Published: 2011
Released on J-STAGE: July 17, 2011
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Yuichiro Yamazaki, Kohji Omata, Muneyoshi Yamada, Masafumi Nakaya, Ats ...
Session ID: A08
Published: 2011
Released on J-STAGE: July 17, 2011
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Hajime Munakata, Yasuyoshi Iwase, To-ru Koyama, Akimitsu Miyaji, Ken M ...
Session ID: A09
Published: 2011
Released on J-STAGE: July 17, 2011
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Yuta Nakasaka, Takuya Okamura, Hiroki Konno, Takahito Kawahara, Teruok ...
Session ID: A10
Published: 2011
Released on J-STAGE: July 17, 2011
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Dingfeng Jin, Aritomo Yamaguchi, Takuji Ikeda, Koichi Sato, Norihito H ...
Session ID: A11
Published: 2011
Released on J-STAGE: July 17, 2011
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Kohei Kubo, Hajime Iida, Seitaro Namba, Akira Igarashi
Session ID: A12
Published: 2011
Released on J-STAGE: July 17, 2011
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Toshiyuki Yokoi, Hiroshi Mochizuki, Hiroyuki Imai, Seitaro Namba, Taka ...
Session ID: A13
Published: 2011
Released on J-STAGE: July 17, 2011
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The alkali post-treatment leads to the formation of mesopores inside the crystal by selective desilication and the decrease in the Si/2Al ratio in comparison to that of the parent zeolite, meaning that the Al content and acidity per gram of the zeolite catalyst is increased. In this study, thus treated ZSM-5 catalysts were mainly characterized by solid-state NMR techinique. The NMR results suggest that the Al species were tetrahedrally-coordinated but the their conditions was changed after the alkali post-treatment.
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Development of novel synthesis method of polysulfide using solid catalysts
Eika Weihua Qian
Session ID: A14
Published: 2011
Released on J-STAGE: July 17, 2011
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Synthesis of di-t-butyl polysulfide from isobutene, hydrogen sulfide and sulfur was carried out over MFI zeolite catalysts isomorphously framework-substituted with Al, Ga, and B. Performances of the catalysts were studied relative to liquid dicyclohexylamine catalyst. The catalysts were prepared from zeolite powders by kneading with alumina binder, extrusion, calcination, and ion exchange. The Al- and Ga-containing zeolite catalysts were found to be active for the synthesis of di-t-butyl polysulfide. A higher polysulfide yield was obtained over the Ga-containing catalyst relative to the liquid amine catalyst. The number of bridging sulfurs in the polysulfide ranged from 1 to 9, whereas the average number of bridging sulfur ranged from 4.2 to 4.7 (target 5.0). From the results of NH3 desorption, it is assumed that the strong acid site existing on the zeolite containing Al or Ga in its framework promotes the polysulfide synthesis reaction.
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Tetsuya Shishido, Hirotaka Kuno, Kentaro Teramura, Tsunehiro Tanaka
Session ID: A15
Published: 2011
Released on J-STAGE: July 17, 2011
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Shun Shimura, Hiroki Miura, Kenji Wada, Saburo Hosokawa, Masashi Inoue
Session ID: A16
Published: 2011
Released on J-STAGE: July 17, 2011
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Hiroaki Nasu, Tetsuya Shishido, Kentaro Teramura, Tsunehiro Tanaka
Session ID: A17
Published: 2011
Released on J-STAGE: July 17, 2011
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Tomoki Nishiyama, Saburou Hosokawa, Kenzi Wada, Masashi Inoue
Session ID: A18
Published: 2011
Released on J-STAGE: July 17, 2011
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Qiang Lin, Kenichi Shimizu, Atshushi Satsuma
Session ID: A19
Published: 2011
Released on J-STAGE: July 17, 2011
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In-situ UV-vis spectroscopy is sensitive and a powerful tool to detect the formation of Rh0 from surface isolated Rh3+ on Rh/Al
2O
3 with low loadings of Rh. The kinetic analysis for reduction of the Rh/Al
2O
3 catalysts were carried out at 523-823 K by in situ UV-vis measurements. It was found that the Rh3+ reduction rate is determined by the amount of reducible isolated Rh3+ on the catalysts. The activation energy (Ea) of the reduction was estimated as a constant with a value about 60-62 kJ mol-1, suggesting that the pre-exponential factor is defined by the amount of reducible isolated Rh3+.
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Eika Qian, Akira Shinozaki, Shaofeng Gong
Session ID: B01
Published: 2011
Released on J-STAGE: July 17, 2011
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Yasuharu Kanda, Takao Kobayashi, Yoshio Uemichi, Masatoshi Sugioka
Session ID: B02
Published: 2011
Released on J-STAGE: July 17, 2011
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Effect of support on hydrodesulfurization (HDS) activities of supported Ru catalysts was examined. We used SiO
2, Al
2O
3, TiO
2 and MgO as support. The order of HDS activities of various Ru catalysts sulfided with H
2S-N
2 gas mixture was Ru/SiO
2 > Ru/Al
2O
3 > Ru/TiO
2 > Ru/MgO. Furthermore, the HDS activity of Ru/SiO
2 catalyst was higher than that of commercial CoMoP/Al
2O
3 catalyst.
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Atsushi Ishihara, Hirotaka Negura, Kentarou Inui, Tadanori Hashimoto, ...
Session ID: B03
Published: 2011
Released on J-STAGE: July 17, 2011
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Amorphous silica-aluminas were prepared using the sol-gel method with the addition of malic acid. Aluminum trinitrate nonahydrate could be used instead of ASB and very similar pore structure was obtained. Further, although a silica-alumina was prepared at pH=9, the pore size distribution became much broader compared with those of silica-aluminas prepared at acid side pH. The activities of the mixed catalysts using these silica-aluminas were almost same, however, the ratios of multi-branched products to single branched products in gasoline fraction decreased. The effect of the addition of 1-dodecene and 1-methylnaphthalene was also investigated.
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Toshiyuki Kimura, Narihito Hata, Xiaohong Li, Sachio Asaoka
Session ID: B04
Published: 2011
Released on J-STAGE: July 17, 2011
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Atsushi Ishihara, Kentarou Inui, Atsushi Owaki, Tadanori Hashimoto, Hi ...
Session ID: B05
Published: 2011
Released on J-STAGE: July 17, 2011
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Silica-alumina was prepared by the sol-gel method using malic acid and its matrix property in catalytic cracking of VGO was investigated using a Curie Point Pyrolyzer. In the catalytic cracking of VGO, the yield of gasoline fraction was more than 60% although 7 times larger amount of the catalyst than that of VGO was used. The result was different from that of dodecane cracking. In VGO catalytic cracking, the yield of C3-C5 fractions decreased and that of more than C6 increased. In PONA distribution, the yield of aromatic compounds largely increased and that of paraffin decreased.
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Yoshiyuki Izutsu, Yuki Oku, Yasushi Sekine, Eiichi Kikuchi, Masahiko M ...
Session ID: B06
Published: 2011
Released on J-STAGE: July 17, 2011
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Yoshikazu Sugimoto, Tugsuu Tserendorj, Enkhsaruul Byambajav
Session ID: B07
Published: 2011
Released on J-STAGE: July 17, 2011
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Synthesis of well-ordered porous silica materials by using anionic surfactants and basic amino acids and their application
Toshiyuki Yokoi
Session ID: B08
Published: 2011
Released on J-STAGE: July 17, 2011
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Selective hydrolysis of cellulose into glucose and its conversions into lactate and gluconate by catalytic hydrothermal methods using solid catalysts
Ayumu Onda
Session ID: B09
Published: 2011
Released on J-STAGE: July 17, 2011
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Cellulose with -1,4-glycosidic bonds is the most abundant source of biomass, and it has a potential ability to alternate with fossil resources for sustainable production of chemicals and fuels. A new green catalytic process is a challenge for the glucose formation from cellulose. Herein, we will present an efficient process for the selective hydrolysis of cellulose into glucose using solid acid catalysts under hydrothermal conditions. This report is the first to indicate the solid acid catalysis for the hydrolysis of cellulose into glucose selectively higher than 90 C-%. Among the solid acid catalysts we tested, a sulfonated activated-carbon catalyst showed remarkably high yield of glucose, which was due to the high hydrothermal stability and the excellent catalytic property attributed to the strong acid sites of SO
3H functional groups and the hydrophobic planes.
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Naoki Mimura, Masakazu Date, Tadahiro Fujitani
Session ID: B10
Published: 2011
Released on J-STAGE: July 17, 2011
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Liquid phase oxidation of glycerol over Au-Pd/TiO
2 catalyst prepared by deposition-precipitation method was studied. The suitable content was clarified as a result of changing the content of Au and Pd from Au 100% to Pd 100%. Moreover, the suitable stirring speeds for the reaction were clarified. Thus, the stirring condition is one of the important parameters in this reaction.
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Kozue Mutaguchi, Akira Fukuda, Jin Konishi, Takeshi Uemura
Session ID: B11
Published: 2011
Released on J-STAGE: July 17, 2011
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Kouhei Ota, Eika W. Qian
Session ID: B12
Published: 2011
Released on J-STAGE: July 17, 2011
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Aritomo Yamaguchi, Norihito Hiyoshi, Osamu Sato, Masayuki Shirai
Session ID: B13
Published: 2011
Released on J-STAGE: July 17, 2011
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Shota Okuda, Chikara Saburi, Hiroki Muroyama, Toshiaki Matsui, Koichi ...
Session ID: B14
Published: 2011
Released on J-STAGE: July 17, 2011
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Shohei Tada, Ryuji Kikuchi, Atsushi Takagaki, S.Ted Oyama, Kohei Urasa ...
Session ID: B15
Published: 2011
Released on J-STAGE: July 17, 2011
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Yasushi Sekine, Masayuki Haraguchi, Masahiko Matsukata, Eiichi Kikuchi
Session ID: B16
Published: 2011
Released on J-STAGE: July 17, 2011
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Keisuke Tanaka, Yasushi Sekine, Kazumasa Ohshima, Masahiko Matsukata, ...
Session ID: B17
Published: 2011
Released on J-STAGE: July 17, 2011
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Takashi Toyoda, Eika W. Qian
Session ID: B18
Published: 2011
Released on J-STAGE: July 17, 2011
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Nobuo Abe, Masataka Kimoto, Iwao Matsumoto, Yutaka Tachibana
Session ID: C01
Published: 2011
Released on J-STAGE: July 17, 2011
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Hideki Tashiro, Yasumitsu Ibaraki, Kunio Yamamoto, Kazuhito Nakamura
Session ID: C02
Published: 2011
Released on J-STAGE: July 17, 2011
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Yasuo Kozaki, Kazuhito Nakamura, Yutaka Tachibana
Session ID: C04
Published: 2011
Released on J-STAGE: July 17, 2011
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Yuji Naka, Takeshi Ishikawa, Yuanjin Ling
Session ID: C05
Published: 2011
Released on J-STAGE: July 17, 2011
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Most of process industries generally keep all of facilities sound with maintenance work based on their deterioration trends. In addition, if we utilize design rationale in operation and maintenance activities, it is possible to promote fundamental risk management from the plant life cycle viewpoint. It can support management of change as well as safety conscious operations. This paper proposes a new framework and a supporting engineering environment.
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Heisuke Tochihara, Go Suzuki
Session ID: C06
Published: 2011
Released on J-STAGE: July 17, 2011
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Alarm system is important to keep safety and stable plant operation by human operator. This paper describes an approach to design alarm and its set point based on HAZOP like method. Also effect of alarm filter, which is simulated with a dynamic process simulator, is discussed.
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Takahiro Kobayashi
Session ID: C07
Published: 2011
Released on J-STAGE: July 17, 2011
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Kenzo Fujii, Toru Yamamoto
Session ID: C08
Published: 2011
Released on J-STAGE: July 17, 2011
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