Search Results - "Junko, N"

Control of the Al Distribution in the Framework of ZSM‑5 Zeolite and Its Evaluation by Solid-State NMR Technique and Catalytic Properties by Yokoi, Toshiyuki, Mochizuki, Hiroshi, Namba, Seitaro, Kondo, Junko N, Tatsumi, Takashi

“…The effects of the organic structure-directing agents (OSDAs) and Na cations for the synthesis of ZSM-5 on the location of Al atom in the framework as well as…”
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Dealuminated Beta zeolite as effective bifunctional catalyst for direct transformation of glucose to 5-hydroxymethylfurfural by Otomo, Ryoichi, Yokoi, Toshiyuki, Kondo, Junko N., Tatsumi, Takashi

“…Dealuminated Beta zeolites, which have two types of acid sites, are effective catalysts in the transformation of glucose to 5-hydroxymethylfurfural (HMF)…”
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Al distribution and catalytic performance of ZSM-5 zeolites synthesized with various alcohols by Biligetu, Turgen, Wang, Yong, Nishitoba, Toshiki, Otomo, Ryoichi, Park, Sungsik, Mochizuki, Hiroshi, Kondo, Junko N., Tatsumi, Takashi, Yokoi, Toshiyuki

“…[Display omitted] •ZSM-5 was synthesized from the synthetic gels containing various alcohols.•The impact of the alcohols on the Al distribution was…”
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Effect of desilication of H-ZSM-5 by alkali treatment on catalytic performance in hexane cracking by Mochizuki, Hiroshi, Yokoi, Toshiyuki, Imai, Hiroyuki, Namba, Seitaro, Kondo, Junko N., Tatsumi, Takashi

“…[Display omitted] ► The enlargement of the external surface area of ZSM-5 suppressed the pore blocking by coke formation. ► Lewis acid sites are generated by…”
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Low-temperature methanol dehydration to dimethyl ether over various small-pore zeolites by Masih, Dilshad, Rohani, Sohrab, Kondo, Junko N., Tatsumi, Takashi

“…[Display omitted] •Small-pore 3-D zeolites are highly effective for catalytic dehydration of methanol to DME at low-temperature (≤200°C).•Rho, KFI, and SSZ-13…”
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Crystallization of Mesoporous Metal Oxides by Kondo, Junko N, Domen, Kazunari

“…Crystallization of an amorphous inorganic network of mesoporous metal oxides is achieved while maintaining the original ordered mesoporous structure. The…”
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Heterogeneous Ni Catalyst for Direct Synthesis of Primary Amines from Alcohols and Ammonia by Shimizu, Ken-ichi, Kon, Kenichi, Onodera, Wataru, Yamazaki, Hiroshi, Kondo, Junko N

“…This paper reports the synthesis of primary amines from alcohols and NH3 by an Al2O3-supported Ni nanoparticle catalyst as the first example of heterogeneous…”
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Selective synthesis of 5-hydroxymethylfurfural over natural rubber–derived carbon/silica nanocomposites with acid–base bifunctionality by Yousatit, Satit, Osuga, Ryota, Kondo, Junko N., Yokoi, Toshiyuki, Ngamcharussrivichai, Chawalit

“…[Display omitted] •Carbon/silica composite (MCS) prepared from natural rubber was used as a support.•Carbon and silica were grafted with sulfonic acid and…”
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Probing the basicity of lattice oxygen on H-form zeolites using CO2 by Osuga, Ryota, Yokoi, Toshiyuki, Kondo, Junko N.

“…[Display omitted] •Acid–base pair sites exist in zeolite frameworks.•CO2 can be a probe molecule for characterization of the basicity of lattice oxygen on…”
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Control of Al Distribution in the CHA-Type Aluminosilicate Zeolites and Its Impact on the Hydrothermal Stability and Catalytic Properties by Nishitoba, Toshiki, Yoshida, Naohiro, Kondo, Junko N, Yokoi, Toshiyuki

“…The CHA-type aluminosilicate zeolites were synthesized in the presence of the N,N,N-trimethyl-1-adamantammonium cation from different starting materials,…”
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Catalytic dehydration of ethanol-to-ethylene over Rho zeolite under mild reaction conditions by Masih, Dilshad, Rohani, Sohrab, Kondo, Junko N., Tatsumi, Takashi

“…A small-pore zeolite, Rho having 8-membered ring opening and 3-dimensional (3-D) channels is synthesized via a greener process, without the use of a…”
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Facile control of crystallite size of ZSM-5 catalyst for cracking of hexane by Mochizuki, Hiroshi, Yokoi, Toshiyuki, Imai, Hiroyuki, Watanabe, Ryota, Namba, Seitaro, Kondo, Junko N., Tatsumi, Takashi

“…Nano-sized H-ZSM-5 ( ca. ∼65 nm) was synthesized by mixing the mother gel under mild conditions before crystallization. A facile control of the crystallite…”
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Catalytic cracking of n-hexane for producing propylene on MCM-22 zeolites by Wang, Yong, Yokoi, Toshiyuki, Namba, Seitaro, Kondo, Junko N., Tatsumi, Takashi

“…•The catalytic performance of MCM-22 zeolites in n-hexane cracking has been investigated at high n-hexane conversions.•The relationship between the catalytic…”
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Acid-Catalyzed Reactions on Flexible Polycyclic Aromatic Carbon in Amorphous Carbon by Okamura, Mai, Takagaki, Atsushi, Toda, Masakazu, Kondo, Junko N, Domen, Kazunari, Tatsumi, Takashi, Hara, Michikazu, Hayashi, Shigenobu

“…Carbonization of d-glucose at 573−723 K followed by sulfonation produces a functionalized amorphous carbon material with acid catalytic activity as a…”
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Consequences of Fe speciation in MFI zeolites for hydroxylation of benzene to phenol with H2O2 by Xiao, Peipei, Wang, Yong, Kondo, Junko N., Yokoi, Toshiyuki

“…[Display omitted] •Large iron oxide and framework Fe are relatively less reactive than the isolated and oligomeric Fe species.•Oligomeric Fe species is…”
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Ultrafast Encapsulation of Metal Nanoclusters into MFI Zeolite in the Course of Its Crystallization: Catalytic Application for Propane Dehydrogenation by Zhu, Jie, Osuga, Ryota, Ishikawa, Ryo, Shibata, Naoya, Ikuhara, Yuichi, Kondo, Junko N., Ogura, Masaru, Yu, Jihong, Wakihara, Toru, Liu, Zhendong, Okubo, Tatsuya

“…Encapsulating metal nanoclusters into zeolites combines the superior catalytic activity of the nanoclusters with high stability and unique shape selectivity of…”
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Synthesis of Crystallized Mesoporous Tantalum Oxide and Its Photocatalytic Activity for Overall Water Splitting under Ultraviolet Light Irradiation by Noda, Yu, Lee, Byongjin, Domen, Kazunari, Kondo, Junko N

“…The well-ordered two-dimensional hexagonal (2D-hex) structure of mesoporous Ta2O5 was maintained after crystallization with the aid of SiO2 reinforcement,…”
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Protonated Titanate Nanotubes as Solid Acid Catalyst by Kitano, Masaaki, Nakajima, Kiyotaka, Kondo, Junko N, Hayashi, Shigenobu, Hara, Michikazu

“…Protonated titanate nanotubes are demonstrated to function as a highly active solid Lewis acid catalyst even near room temperature. The high catalytic activity…”
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Hydroconversion of methyl laurate over beta-zeolite-supported Ni–Mo catalysts: Effect of acid and base treatments of beta zeolite by Imai, Hiroyuki, Abe, Miku, Terasaka, Kazusa, Yamazaki, Hiroshi, Osuga, Ryota, Kondo, Junko N., Yokoi, Toshiyuki

“…Beta-zeolite-supported Ni–Mo catalysts, NiMo/HBeta, were developed and applied to the hydroconversion of methyl laurate under a hydrogen pressure of 0.4 MPa…”
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Infrared Investigation of Dynamic Behavior of Brønsted Acid Sites on Zeolites at High Temperatures by Osuga, Ryota, Yokoi, Toshiyuki, Doitomi, Kazuki, Hirao, Hajime, Kondo, Junko N

“…Temperature-dependent behavior of acidic OH groups on zeolites was observed by infrared (IR) spectroscopy. While the IR band of acidic OH groups appeared the…”
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