Dihydrogen in cation-substituted zeolites X-an inelastic neutron scattering study

A. J. Ramirez-Cuesta; P. C.H. Mitchell; D. K. Ross; P. A. Georgiev; P. A. Anderson; H. W. Langmi; D. Book

doi:10.1039/b701167a

Dihydrogen in cation-substituted zeolites X-an inelastic neutron scattering study

A. J. Ramirez-Cuesta, P. C.H. Mitchell, D. K. Ross, P. A. Georgiev, P. A. Anderson, H. W. Langmi, D. Book

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

An inelastic neutron scattering (INS) study of the rotational-vibrational spectrum of dihydrogen sorbed by zeolite X having substituted sodium, calcium and zinc cations is reported. The rotational-vibrational spectrum of H₂ was observed at low energy transfer (below ca. 25 meV, 202 cm^-1); the vibration was that of the H₂ molecule against the binding site (H₂-X, not H-H). The vibration frequency was proportional to the polarising power of the cation (Na⁺ < Ca²⁺ < Zn²⁺). Polarisation of the H₂ molecule dominated the interaction of H₂ with this binding site. The total scattering intensity was proportional to the dihydrogen dose. However the vibrational intensities became constant at ca. 0.3 wt% showing that the H₂ binding sites had saturated. Additional dihydrogen appeared as unbound or weakly bound dihydrogen exhibiting recoil.

Original language	English
Pages (from-to)	2533-2539
Number of pages	7
Journal	Journal of Materials Chemistry
Volume	17
Issue number	24
DOIs	https://doi.org/10.1039/b701167a
State	Published - Jun 12 2007
Externally published	Yes

Access to Document

10.1039/b701167a

Cite this

@article{cbea6206b4014bd8be671a601d07381a,

title = "Dihydrogen in cation-substituted zeolites X-an inelastic neutron scattering study",

abstract = "An inelastic neutron scattering (INS) study of the rotational-vibrational spectrum of dihydrogen sorbed by zeolite X having substituted sodium, calcium and zinc cations is reported. The rotational-vibrational spectrum of H2 was observed at low energy transfer (below ca. 25 meV, 202 cm-1); the vibration was that of the H2 molecule against the binding site (H2-X, not H-H). The vibration frequency was proportional to the polarising power of the cation (Na+ < Ca2+ < Zn2+). Polarisation of the H2 molecule dominated the interaction of H2 with this binding site. The total scattering intensity was proportional to the dihydrogen dose. However the vibrational intensities became constant at ca. 0.3 wt\% showing that the H2 binding sites had saturated. Additional dihydrogen appeared as unbound or weakly bound dihydrogen exhibiting recoil.",

author = "Ramirez-Cuesta, \{A. J.\} and Mitchell, \{P. C.H.\} and Ross, \{D. K.\} and Georgiev, \{P. A.\} and Anderson, \{P. A.\} and Langmi, \{H. W.\} and D. Book",

year = "2007",

month = jun,

day = "12",

doi = "10.1039/b701167a",

language = "English",

volume = "17",

pages = "2533--2539",

journal = "Journal of Materials Chemistry",

issn = "0959-9428",

number = "24",

}

TY - JOUR

T1 - Dihydrogen in cation-substituted zeolites X-an inelastic neutron scattering study

AU - Ramirez-Cuesta, A. J.

AU - Mitchell, P. C.H.

AU - Ross, D. K.

AU - Georgiev, P. A.

AU - Anderson, P. A.

AU - Langmi, H. W.

AU - Book, D.

PY - 2007/6/12

Y1 - 2007/6/12

N2 - An inelastic neutron scattering (INS) study of the rotational-vibrational spectrum of dihydrogen sorbed by zeolite X having substituted sodium, calcium and zinc cations is reported. The rotational-vibrational spectrum of H2 was observed at low energy transfer (below ca. 25 meV, 202 cm-1); the vibration was that of the H2 molecule against the binding site (H2-X, not H-H). The vibration frequency was proportional to the polarising power of the cation (Na+ < Ca2+ < Zn2+). Polarisation of the H2 molecule dominated the interaction of H2 with this binding site. The total scattering intensity was proportional to the dihydrogen dose. However the vibrational intensities became constant at ca. 0.3 wt% showing that the H2 binding sites had saturated. Additional dihydrogen appeared as unbound or weakly bound dihydrogen exhibiting recoil.

AB - An inelastic neutron scattering (INS) study of the rotational-vibrational spectrum of dihydrogen sorbed by zeolite X having substituted sodium, calcium and zinc cations is reported. The rotational-vibrational spectrum of H2 was observed at low energy transfer (below ca. 25 meV, 202 cm-1); the vibration was that of the H2 molecule against the binding site (H2-X, not H-H). The vibration frequency was proportional to the polarising power of the cation (Na+ < Ca2+ < Zn2+). Polarisation of the H2 molecule dominated the interaction of H2 with this binding site. The total scattering intensity was proportional to the dihydrogen dose. However the vibrational intensities became constant at ca. 0.3 wt% showing that the H2 binding sites had saturated. Additional dihydrogen appeared as unbound or weakly bound dihydrogen exhibiting recoil.

UR - https://www.scopus.com/pages/publications/34250172103

U2 - 10.1039/b701167a

DO - 10.1039/b701167a

M3 - Article

AN - SCOPUS:34250172103

SN - 0959-9428

VL - 17

SP - 2533

EP - 2539

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

IS - 24

ER -

Dihydrogen in cation-substituted zeolites X-an inelastic neutron scattering study

Abstract

Access to Document

Other files and links

Fingerprint

Cite this