نتایج جستجو برای: hydrothermal condition

تعداد نتایج: 331342  

2012
Thomas M. Yeh Jacob G. Dickinson Allison Franck Phillip E. Savage

One of the promising avenues for biomass processing is the use of water as a reaction medium for wet or aquatic biomass. This review focuses on the hydrothermal catalytic production of fuels and chemicals from aquatic biomass. Two different regimes for conversion of aquatic biomass in hydrothermal conditions are discussed in detail. The first is hydrothermal liquefaction, and the second is hydr...

2009
Hiroaki Onoda Ken-ichi Okumoto Atsushi Nakahira Isao Tanaka

Copper orthophosphate, Cu3(PO4)2, and cyclo-tetraphosphates, Cu2P4O12, were synthesized using phosphoric acid and basic copper carbonate, and then treated with a planetary mill for up to 360 minutes. The un-milled and milled samples were characterized by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. SEM images, particle size distribution, specific surface area, UV...

2012
P. Worathanakul P. Kongkachuichay

A new SUZ-4 zeolite membrane with tetraethlyammonium hydroxide as the template was fabricated on mullite tube via hydrothermal sol-gel synthesis in a rotating autoclave reactor. The suitable synthesis condition was SiO2:Al2O3 ratio of 21.2 for 4 days at 155 °C crystallization under autogenous pressure. The obtained SUZ-4 possessed a high BET surface area of 396.4 m/g, total pore volume at 2.611...

Journal: :Dalton transactions 2013
Zhao Jin Hongming He Huanyu Zhao Tsolmon Borjigin Fuxing Sun Daming Zhang Guangshan Zhu

A new luminescent Zn-MOF has been synthesized under hydrothermal condition using a semi-rigid ligand H3pcoip (4-(2-carboxyphenoxy)isophthalic acid) is reported. The luminescence properties of 1 in methanol, ethanol, and water have been investigated. Interestingly, compound 1 has a unique response to methanol compared to ethanol and water. Moreover, 1 displays a turn-on switching property trigge...

2017
Benjamin Tully Pratixaben Savalia Karla Abuyen Christina Baughan Eric Romero Cynthia Ronkowski Brandon Torres Jason Tremblay Anthony Trujillo Madeline Tyler Ileana Pérez-Rodríguez Jan Amend

Geothermobacter sp. strain EPR-M was isolated from a hydrothermal vent on the East Pacific Rise and has been shown to participate in the reduction of Fe(III) oxides. Here, we report its 3.73-Mb draft genome sequence.

2016
Christopher A. Abin James T. Hollibaugh

Vulcanibacillus modesticaldus BRT was isolated from calcite-rich, metalliferous core samples collected at the Rainbow deep-sea hydrothermal vent field on the Mid-Atlantic Ridge. Here, we report the 2.2-Mb draft genome sequence for this strain, consisting of 100 contigs with a G+C content of 33.6% and 2,227 protein-coding sequences.

2014
Anastasia A. Lunina Alexandr L. Vereshchaka

The aim of this study is to review of our knowledge about distribution of recently known species of vent shrimps and to analyze factors influencing distribution patterns. Analyses are based upon (1) original material taken during eight cruises in the Atlantic Ocean (a total of 5861 individuals) and (2) available literature data from the Atlantic, Pacific, and Indian Oceans. Vent shrimps have tw...

Journal: :Nature 2000
A L Reysenbach A B Banta D R Boone S C Cary G W Luther

1. Tans, S . J., Verschueren, R. M. & Dekker, C. Nature 393, 49–52 (1998). 2. Martel, R., Schmidt, T., Shea, H. R., Hertel, T. & Avouris, Ph. Appl. Phys. Lett. 73, 2447–2449 (1998). 3. Antonov, R. D. & Johnson, A. T. Phys. Rev. Lett. 83, 3274–3276 (1999). 4. Soh, H. T. et al. Appl. Phys. Lett. 75, 627–629 (1999). 5. Yao, Z., Postma, H. W. Ch., Balents, L. & Dekker, C. Nature 402, 273–276 (1999)...

2009
Nabanita Pal Manidipa Paul Asim Bhaumik

A new supermicroporous chromium oxophenylphosphate (CPP-1) has been synthesized using phenylphosphonic acid (PPA) as phosphorus source under hydrothermal condition at 443 K without using any structuredirecting agent (SDA). The material has been characterized by powder XRD, FE SEM-EDS, TEM, TG-DTA, N2 sorption, XPS, FT IR, UV-Vis spectroscopic techniques and CHN chemical analysis. CPP-1 showed s...

Journal: :Bioresource technology 2011
Jiacheng Shen Charles E Wyman

Pretreatment of corn stover in 0.5% sulfuric acid at 160 °C for 40 min realized a maximum monomeric plus oligomeric xylose yield of 93.1% compared to a maximum of only 71.5% for hydrothermal (no added mineral acid) pretreatment at 180 °C for 30 min. To explain differences in dilute acid and hydrothermal yields, a fast reacting xylan fraction (0.0889) was assumed to be able to directly form mono...

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