Development of a high-temperature and high-pressure nuclear magnetic resonance probe for studies of chemical reactions in supercritical water

被引：4

作者：

Amita, F ^{[1
]}

Oka, H ^{[1
]}

Mukaide, M ^{[1
]}

Urasaki, Y ^{[1
]}

Takegoshi, K ^{[1
]}

Terao, T ^{[1
]}

Kajimoto, O ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068502, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2004年 / 75卷 / 02期

关键词：

D O I：

10.1063/1.1638875

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A high-temperature and high-pressure nuclear magnetic resonance (NMR) probe has been developed to investigate chemical reactions in supercritical water up to 50 MPa and 500degreesC. The NMR probe is of a continuous flow type with a high-pressure sample tube made of hot-pressed Si3N4 and a specially designed heat-resistant high-pressure seal. A mixing method was utilized to quickly realize the supercritical condition. The NMR probe can be used for in situ investigation of rapid reactions with several hundreds of ms half lives in continuously flowing supercritical water as well as slow equilibria under a stopped-flow condition. (C) 2004 American Institute of Physics.

引用

页码：467 / 471

页数：5

共 11 条

[1]

*AM SOC MET, 1997, ASM MET HDB

[2] A high-temperature high-pressure optical cell for general-purpose spectrometers designed for supercritical water experiments [J].

Amita, F ;

Okada, K ;

Oka, H ;

Kajimoto, O .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (09) :3605-3609

[3] UV-VISIBLE ABSORBENCY SPECTROSCOPY OF ORGANIC PROBES IN SUPERCRITICAL WATER [J].

BENNETT, GE ;

JOHNSTON, KP .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (02) :441-447

[4]

BRUCE SB, 2000, J PHYS CHEM A, V104, P531

[5] YIELD STRESS OF OPPOSED ANVILS [J].

DUNN, KJ .

JOURNAL OF APPLIED PHYSICS, 1977, 48 (05) :1829-1832

[6]

Gere JM., 1984, MECH MATER

[7] Are there hydrogen bonds in supercritical water? [J].

Hoffmann, MM ;

Conradi, MS .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (16) :3811-3817

[8] Nuclear magnetic resonance probe for supercritical water and aqueous solutions [J].

Hoffmann, MM ;

Conradi, MS .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (01) :159-164

[9] Solvation in supercritical fluids: Its effects on energy transfer and chemical reactions [J].

Kajimoto, O .

CHEMICAL REVIEWS, 1999, 99 (02) :355-389

[10]

MATSUBAYASHI N, 1997, J CHEM PHYS, V107, P9133

← 1 2 →