Hydrogen Adsorption in the Ti-Doped Mesoporous Silicate SBA-15

被引：24

作者：

Acatrinei, A. I. ^{[1
]}

Hartl, M. A. ^{[1
]}

Eckert, Juergen ^{[1
,2
]}

Falcao, Eduardo H. L. ^{[2
]}

Chertkov, G. ^{[1
,3
]}

Daemen, L. L. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA

[2] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 35期

关键词：

X-RAY-ABSORPTION; CATALYTIC-ACTIVITY; TITANIUM; STORAGE; CLUSTERS; VIBRATIONS; SPILLOVER; COPOLYMER; TRIBLOCK; ZEOLITE;

D O I：

10.1021/jp8110875

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

While metal-doped mesoporous silicate SBA-15 has been studied extensively for its catalytic properties, the adsorption of molecular hydrogen in this system has not been considered. We report herein that the titanium-doped material (10% Ti) adsorbs nearly twice the amount of hydrogen at 77 K and a pressure of 25 bar than pure SBA-15, Hydrogen adsorption isotherms also show that binding energies in the Ti-doped material are more than 50% greater than in SBA-15. Neutron vibrational spectroscopy shows clear evidence for interaction of hydrogen with Ti, which is responsible for part of the increase in hydrogen sorption in the material.

引用

页码：15634 / 15638

页数：5

共 34 条

[1] Ga doped SBA-15 as an active and stable catalyst for Friedel-Crafts liquid-phase acylation [J].

El Berrichi, Z ;

Cherif, L ;

Orsen, O ;

Fraissard, J ;

Tessonnier, JP ;

Vanhaecke, E ;

Louis, B ;

Ledoux, MJ ;

Pham-Huu, C .

APPLIED CATALYSIS A-GENERAL, 2006, 298 (194-202) :194-202

[2] Doping of europium in the pores of surface-modified SBA-15 [J].

Gu, CW ;

Chia, PA ;

Zhao, XS .

APPLIED SURFACE SCIENCE, 2004, 237 (1-4) :387-392

[3] Microstructure and low-temperature hydrogen storage capacity of ball-milled graphite [J].

Hentsche, Melanie ;

Hermann, Helmut ;

Lindackers, Dirk ;

Seifert, Gotthard .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (10-11) :1530-1536

[4] Post-grafting preparation of large-pore mesoporous materials with localized high content titanium doping [J].

Hua, ZL ;

Bu, WB ;

Lian, YX ;

Chen, HR ;

Li, L ;

Zhang, LX ;

Li, C ;

Shi, JL .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (06) :661-665

[5] Structure and vibrational spectra of Ti(IV) hydroxides and their clusters with expanded titanium coordination.: DFT study [J].

Ignatyev, Igor S. ;

Montejo, Manuel ;

Gonzalez, Juan Jesus Lopez .

JOURNAL OF PHYSICAL CHEMISTRY A, 2007, 111 (32) :7973-7979

[6] Vibrational properties of TiHn complexes adsorbed on carbon nanostructures [J].

Iniguez, Jorge ;

Zhou, Wei ;

Yildirim, Taner .

CHEMICAL PHYSICS LETTERS, 2007, 444 (1-3) :140-144

[7] OBSERVATION OF THE FUNDAMENTAL BENDING VIBRATIONS OF HYDROXYL-GROUPS IN HNA-Y ZEOLITE BY NEUTRON INELASTIC-SCATTERING [J].

JOBIC, H .

JOURNAL OF CATALYSIS, 1991, 131 (01) :289-293

[8] Synthesis of Ti-containing SBA-15 materials and studies on their photocatalytic decomposition of orange II [J].

Jung, Won Young ;

Baek, Seung Hee ;

Yang, Jin Sup ;

Lim, Kwon-Taek ;

Lee, Man Sig ;

Lee, Gun-Dae ;

Park, Seong Soo ;

Hong, Seong-Soo .

CATALYSIS TODAY, 2008, 131 (1-4) :437-443

[9] Repeatable hydrogen adsorption using nanostructured graphite at room temperature [J].

Kajiura, H ;

Kadono, K ;

Tsutsui, S ;

Murakami, Y .

APPLIED PHYSICS LETTERS, 2003, 82 (12) :1929-1931

[10] Hydrogen adsorption and desorption by carbon materials [J].

Kojima, Yoshitsugu ;

Kawai, Yasuaki ;

Koiwai, Akihiko ;

Suzuki, Nobuaki ;

Haga, Tetstuya ;

Hioki, Tatsumi ;

Tange, Kyoichi .

JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 421 (1-2) :204-208

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