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432篇 您的检索式:作者名="Tsubaki"
    题名 作者 年代 出处 被引量
1低温甲醇合成研究进展显示文摘日本学者Tsubaki等开创了一种全新的低温甲醇合成反应路径。该路径以含有二氧化碳的合成气为反应原料,使用单一低碳醇(包括甲醇)同时作为催化剂和溶剂,实现了反应原料一氧化碳在低温(443 K)条件下,一步转化率达到70%~100%。原位红外和多种表征手段证明,该反应能够在低温条件下进行,是由于催化剂上吸附的甲酸盐物种可以和多种低碳醇溶剂在低温条件发生酯化反应,生成相对应的甲酸酯。而生成的甲酸酯很容易在低温条件下,铜基催化剂表面,发生加氢反应,生成甲醇和相应的溶剂醇。该种全新的甲醇合成路径克服了常规甲醇合成过程中,甲酸盐必须在高温条件下才能发生加氢反应的关键步骤。同时,还介绍了适用于低温甲醇合成反应的金属Cu/ZnO催化剂制备方法的研究进展。全新的溶胶-凝胶-燃烧法、固相研磨-燃烧法以及甲酸辅助燃烧法直接制备高活性、纳米尺度、高分散的金属Cu/ZnO催化剂,而不需要额外的还原流程。石磊 张婉莹 王玉鑫 Tsubaki Noritatsu 2015化工学报2015,66,9:9
2不同改性组分对Cu-ZnO基催化剂低温甲醇合成性能的影响显示文摘通过共沉淀法制备了Al、Zr和Ce改性的Cu-ZnO基低温甲醇合成催化剂,采用氮气物理吸附、H2-TPR、CO2-TPD、N2O滴定、XRD和TEM等技术对其进行了表征,并考察了改性组分和煅烧温度对其在170℃下合成气制甲醇催化性能的影响。结果表明,经Zr改性的Cu-ZnO基催化剂,其低温甲醇合成性能较好;随着煅烧温度的降低,Cu在催化剂表面的分散度逐渐变大、颗粒逐渐变小,所得到的催化剂其活性也较高;其中,未经煅烧的Cu-ZnO/ZrO2催化剂的活性最佳,其甲醇时空产率为106.02 g/(kg·h),选择性达87.04%。汤小波 NORITATSU Tsubaki 解红娟 韩怡卓 谭猗生 2014燃料化学学报2014,42,6:9
3Catalytic Oxidation of Dimethyl Ether to Dimethoxymethane over Cs Modified H_3PW_(12)O_(40)/SiO_2 Catalysts显示文摘为一步舞的吸引人的利用线路到 dimethoxymethane 的暗淡乙醇醚的催化氧化成功地在 H3PW12O40 (40%)/SiO2 催化剂上被执行,由 C, K, Ni,和 V 修改了。H3PW12O40 (40%)/SiO2 的 C 修正给了 20% 暗淡乙醇醚变换和 34.8% dimethoxymethane 选择的最有希望的结果。Dimethoxymethane 能经由通过在酸地点之间的 synergistic 效果从暗淡乙醇醚分解的 methoxy 组被综合, C 的氧化还原作用地点修改了 H3PW12O40 (40%)/SiO2。Qingde Zhang Yisheng Tan Caihong Yang Yizhuo Han Jun Shamoto Noritatsu Tsubaki 2007Journal of Natural Gas Chemistry2007,16,3:7
4掺杂Nb、B等元素对MoVTe催化剂一步催化氧化丙烯制丙烯酸的影响显示文摘采用共沉淀法制备MoVTe复合氧化物系列催化剂,研究其一步氧化丙烯制备丙烯酸的催化性能,并采用XRD、ICP、EDS、H2-TPR、NH3-TPD对催化剂的结构、表面进行表征.结果表明,加入适量的Nb显著提高MoVTe复合氧化物对丙烯酸的选择性,可从34.1%提高至83.5%;同时丙烯酸的收率从24.7%提高到48.8%.适量Nb存在可以稳定催化剂表面Te元素,从而提高了丙烯酸的选择性;B、Fe、Ce、W元素掺杂对催化剂催化性能产生不同的影响,B掺杂提高了催化剂的催化性能,加入酸性元素硼可增加MoVTeNb复合氧化物催化剂表面丙烯活化位点(Te4+=O·Te3+─O·)的数目,使得丙烯转化率和丙烯酸收率显著提高,分别高达89.8%和64.8%.李双明 邵慧 徐雷雷 陈灿 马婧舒 刘茜 伞小广 李文秀 Noritatsu TSUBAKI 于三三 2014分子催化2014,28,2:7
5Synthesis and Characterization of Condensed Polynuclear Aromatic Resin Derived from Ethylene Tar显示文摘As a kind of low-cost and readily available industrial byproduct, ethylene tar (ET) was for the first time utilized for the preparation of heat-resistant condensed polynuclear aromatic resin (COPNAR). The basic properties of ET and the resulted COPNAR were characterized by FT-IR, 1H-NMR, TGA and elemental analysis. The test results showed that ET with high aromatic content (>50%) was suitable for the synthesis of COPNAR with superior heat resistance. The average molecular structure of ET was obtained by means of the improved Brown-Ladner method, and the reaction mechanism was considered as an acid-catalyzed positive ion-typed polymerization. Our findings have provided a new route to develop ET into technology-added heat-resistant resins.Wu Mingbo Shi Yangyang Li Shibin Wang Yuwei Tan Minghui Wang Ding Zheng Jingtang Tsubaki Noritatsu 2012China Petroleum Processing & Petrochemical Technology2012,14,4:7
6ZnCr基催化剂煅烧温度对异丁醇合成性能的影响显示文摘研究了煅烧温度对ZnCr基催化剂合成异丁醇性能的影响。结果表明,随着煅烧温度的升高,催化剂的活性和产物分布都发生了较大的变化。催化剂在较低的温度下煅烧,液相产物中醇主要是甲醇和异丁醇;在较高的温度下煅烧,液相产物醇的分布符合A-S-F方程。用BET、XRD、H2-TPR、XPS等技术手段对催化剂织构参数、体相结构、还原性能、表面组成进行表征。结果表明,在300℃煅烧时,催化剂中的ZnO和Cr2O3未完全形成非计量尖晶石ZnxCr2/3(1-x)O;400℃煅烧时,催化剂中形成了最多量非计量尖晶石ZnxCr2/3(1-x)O;当煅烧温度高于400℃时,随着煅烧温度进一步升高,非计量尖晶石ZnxCr2/3(1-x)O逐步发生了分解,生成了更多量的ZnO和Cr2O3,导致催化剂的活性随之下降。进一步证明了非计量尖晶石ZnxCr2/3(1-x)O是该催化反应活性相。寇永利 解红娟 刘广波 武应全 张欣悦 韩怡卓 Noritatsu Tsubaki 谭猗生 2013燃料化学学报2013,41,6:5
7Al_2O_3改性Co/SiO_2费托合成催化剂的制备及结构表征显示文摘采用溶液浸渍法制备不同含量Al2O3的Co/SiO2-Al2O3催化剂。采用程序升温还原(TPR)、X射线衍射(XRD)、物理吸附(BET)以及原位CO吸附红外光谱(DRIFT)对催化剂进行表征。结果表明:Al2O3的添加导致催化剂比表面积稍有下降,但对孔径分布无明显影响;随着Al2O3负载量的增加,载体表面钴粒子粒径变小,分散度提高,同时还原度逐步降低;Al2O3改性后催化剂表面CO吸附峰位发生蓝移,并且桥式CO吸附峰强度明显增大,说明Al2O3改性后钴催化剂具有更高的表面活性。孙晓瑜 张燚 鲍骏 TSUBAKI Noritatsu 2009中国石油大学学报(自然科学版)2009,33,5:5
8Omentin, a novel adipokine, induces vasodilation in rat isolated blood vessels显示文摘Hideyuki Yamawaki Naoya Tsubaki Masashi Mukohda Muneyoshi Okada Yukio Hara 2010Biochemical and Biophysical Research Communications2010,,4:4
9中国内蒙自治区马饲育环境土壤中马红球菌的分布(英文)显示文摘对中国内蒙古自治区饲育马土壤环境中马红球菌的分布知之甚少;为此,在中国内蒙古通辽近郊、内蒙古南部锡林郭勒盟大草原、内蒙古东部呼伦贝尔大草原等马场共收集了108份土壤样品进行了马红球菌的检测。结果,锡林郭勒盟大草原和呼伦贝尔大草原的马红球菌分离率为25.9%~30.0%,通辽近郊土壤中分离率高达82.3%。这说明在通辽近郊马红球菌的分离菌数是草原土壤中马红球菌分离菌数的10倍。应用PCR技术检测了488株的毒力相关基因,相对分子质量分别为15000~17000(VapA)和20000(VapB)。所有的分离株都未检出毒力相关基因。这些无毒力分离株的质粒资料显示,各种大小的潜在质粒的发生率为13.3%~21.5%。本研究结果截然不同于我们新近对蒙古国的调查结论:马红球菌在蒙古国乌兰巴托的马群中不存在。造成这一差异的原因可能在于蒙古国的游牧生活和内蒙古的非游牧生活。丁壮 Shinji TAKAI Hiroo MADARAME 常爽 黄海楠 霍晓伟 高明华 谭忠田 高双成 Fumiko HATORI Yukako SASAKI Tsutomu KAKUDA Shiro TSUBAKI 2008中国兽医学报2008,28,1:3
10低温甲醇合成工业试验装置运行分析显示文摘依托建成的低温甲醇合成工业试验装置,采用控制变量法分析了反应温度、反应压力、合成气氢碳比等因素对低温甲醇合成的影响,并对其经济性进行分析。结果表明:在170℃、反应压力6.0 MPa、合成气流速1.5 L·min^(-1)、氢合成气氢碳比4.4左右的条件,CO单程转化率达到97.5%,甲醇选择性达到99.78%。通过与传统甲醇合成工艺对比,低温甲醇合成成本可降低106元。宋晓玲 李进 冯俊 石磊 Tsubaki Noritatsu 2021辽宁化工2021,50,4:3
11Sputtered nano-cobalt on H-USY zeolite for selectively converting syngas to gasoline显示文摘Selectively converting CO and H2 to gasoline product(isoparaffin and olefin) in one step still remains a great challenge. We demonstrate effective H-USY zeolite supported nano-cobalt bifunctional catalysts for this catalytic reaction, which are prepared by the novel physical sputtering process. Particles of the sputtered cobalt exist in nano-level and are well-dispersed on acid USY zeolite. Easy activation of the loaded nano-cobalt is also achieved in a low-temperature hydrogen reduction atmosphere. In the tandem catalytic reaction, the sputtered bifunctional Co/USY catalyst exhibits a much higher CO conversion and higher isoparaffin selectivity than the conventional impregnated one. Compared with H-Mor, H-Beta and other zeolites supported catalysts, H-USY zeolite supported cobalt catalyst shows the clearest promotional effect on the activity of FischerTropsch synthesis. The described synthesis herein provides a new pathway to solve the problem caused by the strong metal-support interaction(MSI) in heterogeneous catalysis.Peng Lu Jian Sun Pengfei Zhu Takayuki Abe Ruiqin Yang Akira Taguchi Tharapong Vitidsant Noritatsu Tsubaki 2015Journal of Energy Chemistry2015,24,5:2
12Refining of metallurgical silicon by directional solidification显示文摘M.A. Martorano J.B. Ferreira Neto T.S. Oliveira T.O. Tsubaki 2010Materials Science & Engineering B2010,,3:2
13Influence of deflection angles on flow behaviours in openchannel bends显示文摘The deflection angle of a river bend plays an important role on behaviours of the flow within it, and a clear understanding of the angle's influence is significant in both theoretical study and engineering application. This paper presents a systematic numerical investigation on effects of deflection angles(30°, 60°, 90°, 120°, 150°, and 180°) on flow phenomena and their evolution in open-channel bends using a Re-Normalization Group(RNG) κ-ε model and a volume of fluid(VOF) method. The numerical results indicate that the deflection angle is a key factor for flows in bends. It is shown that the maximum transverse slope of water surface occurs at the middle cross section of a bend, and it increases with the deflection angle. Besides a major vortex, or, the primary circulation cell near the channel bottom, a secondary vortex, or, an outer bank cell, may also appear above the former and near the outer bank when the deflection angle is sufficiently large, and it will gradually migrate towards the inner bank and evolve into an inner bank cell. The strength of the secondary circulations increases with the deflection angle. The simulation demonstrates that there is alow-stress zone on the bed near the outer bank and a high-stress zone on the bed near the inner bank, and both of them increase in size with the deflection angle. The maximum of shear stress on the inner bank increases nonlinearly with the angle, and its maximums on the outer bank and on the bed take place when the deflection angle becomes 120°.LI Bing-dong ZHANG Xin-hua TANG Han-song TSUBAKI Ryota 2018Journal of Mountain Science2018,15,10:2
14Tamoxifen inhibits tumor cell invasion and metastasis in mouse melanoma through suppression of PKC/MEK/ERK and PKC/PI3K/Akt pathways显示文摘Matsuoka H Tsubaki M Yamazoe Y 2009Exp Cell Res2009,315,12:1
15Relationship between surgical procedure and spontaneous urination after rectal cancer surgery 显示文摘Tsubaki M Hasimoto R Sunagawa M 2005Asian J Surg2005,28,1:1
16Simulta neous introduction of chemical and spatial effects via a new bimodal catalyst support preparation method显示文摘Zhang Yi Yoneyama Yoshiharu Tsubaki Noritatsu 2002Chem Commun2002,11,:1
17The changes of cerebral blood flow during mastieation显示文摘Kanata M Nomma P Tsubaki H 1991Dental Review1991,584,:1
18Delivery after bone marrow transplantation with total lymphoid irradiation for severe aplastic anemia显示文摘Ashida T Tsubaki K Hazu S 1996Int J Hematol1996,64,34:1
19Overexpression of survivin via activation of ERK1/2, Akt, and NF-KB plays a central role in vincristine resistance in multiple myeloma cells 显示文摘Tsubaki M Takeda T Ogawa N 2015Leuk Res2015,39,4:1
20Performance of K- promoted hydrotalcite-derived CoMgAlO catalysts used for soot combustion, NOx storage and simultaneous soot-NOx removal显示文摘Li Q Meng M Tsubaki N 2009Applied Catalysis B: Environ- mental2009,91,12:1
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