A nuclear magnetic resonance microscopy study of mass transport in porous materials

2000 ◽  
Vol 18 (1) ◽  
pp. 13-28 ◽  
Author(s):  
I. V. Koptyug ◽  
R. Z. Sagdeev ◽  
L. Yu. Khitrina ◽  
V. N. Parmon
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Mass Transport ◽  
Porous Materials ◽  
Microscopy Study ◽  
Magnetic Resonance Microscopy ◽  
Nuclear Magnetic

Nuclear magnetic resonance microscopy with 4-μm resolution: Theoretical study and experimental results

1988 ◽  
Vol 15 (6) ◽  
pp. 815-824 ◽  
Author(s):  
Z. H. Cho ◽  
C. B. Ahn ◽  
S. C. Juh ◽  
H. K. Lee ◽  
R. E. Jacobs ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Theoretical Study ◽  
Experimental Results ◽  
Magnetic Resonance Microscopy ◽  
Nuclear Magnetic

scholarly journals Nuclear Magnetic Resonance Spectroscopy for In Situ Monitoring of Porous Materials Formation under Hydrothermal Conditions

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1416 ◽  
Author(s):  
Mohamed Haouas
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Porous Materials ◽  
Local Environment ◽  
In Situ Monitoring ◽  
Resonance Spectroscopy ◽  
Hydrothermal Conditions ◽  
Technological Advances ◽  
Nuclear Magnetic

The employment of nuclear magnetic resonance (NMR) spectroscopy for studying crystalline porous materials formation is reviewed in the context of the development of in situ methodologies for the observation of the real synthesis medium, with the aim of unraveling the nucleation and growth processes mechanism. Both liquid and solid state NMR techniques are considered to probe the local environment at molecular level of the precursor species either soluble in the liquid phase or present in the reactive gel. Because the mass transport between the liquid and solid components of the heterogeneous system plays a key role in the synthesis course, the two methods provide unique insights and are complementary. Recent technological advances for hydrothermal conditions NMR are detailed and their applications to zeolite and related materials crystallization are illustrated. Achievements in the field are exemplified with some representative studies of relevance to zeolites, aluminophosphate zeotypes, and metal-organic frameworks.

scholarly journals Probe material choice for nuclear magnetic resonance cryoporometry (NMRC) measurements of the nano-scale pore size distribution of unconventional reservoirs

2018 ◽  
Vol 37 (1) ◽  
pp. 412-428
Author(s):  
Feng Zhu ◽  
Wenxuan Hu ◽  
Jian Cao ◽  
Biao Liu ◽  
Yifeng Liu ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Pore Size Distribution ◽  
Porous Materials ◽  
Pore Size ◽  
Size Distribution ◽  
Geological Samples ◽  
Nano Scale ◽  
Chloride Hexahydrate ◽  
Nuclear Magnetic

Nuclear magnetic resonance cryoporometry is a newly developed technique that can characterize the pore size distribution of nano-scale porous materials. To date, this technique has scarcely been used for the testing of unconventional oil and gas reservoirs; thus, their micro- and nano-scale pore structures must still be investigated. The selection of the probe material for this technique has a key impact on the quality of the measurement results during the testing of geological samples. In this paper, we present details on the nuclear magnetic resonance cryoporometric procedure. Several types of probe materials were compared during the nuclear testing of standard nano-scale porous materials and unconventional reservoir geological samples from Sichuan Basin, Southwest China. Gas sorption experiments were also carried out on the same samples simultaneously. The KGT values of the probe materials octamethylcyclotetrasiloxane and calcium chloride hexahydrate were calibrated using standard nano-scale porous materials to reveal respective values of 149.3 Knm and 184 Knm. Water did not successfully wet the pore surfaces of the standard controlled pore glass samples; moreover, water damaged the pore structures of the geological samples, which was confirmed during two freeze-melting tests. The complex phase transition during the melting of cyclohexane introduced a nuclear magnetic resonance signal in addition to that from liquid in the pores, which led to an imprecise characterization of the pore size distribution. Octamethylcyclotetrasiloxane and calcium chloride hexahydrate have been rarely employed as nuclear magnetic resonance cryoporometric probe materials for the testing of an unconventional reservoir. Both of these materials were able to characterize pore sizes up to 1 μm, and they were more applicable than either water or cyclohexane.

A superconducting probehead applicable for nuclear magnetic resonance microscopy at 7 T

1998 ◽  
Vol 69 (7) ◽  
pp. 2708-2712 ◽  
Author(s):  
F. Odoj ◽  
E. Rommel ◽  
M. v. Kienlin ◽  
A. Haase
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Microscopy ◽  
Nuclear Magnetic

Characterisation of porous materials by means of nuclear magnetic resonance

2001 ◽  
Vol 19 (3-4) ◽  
pp. 577
Author(s):  
C.A. Martı́n ◽  
M.E. Ramia ◽  
D.J. Pusiol ◽  
A. Fiñana ◽  
M.F. Gayol ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Porous Materials ◽  
Nuclear Magnetic

Impact of Industrial Dough Processing on Structure: A Rheology, Nuclear Magnetic Resonance, and Electron Microscopy Study

2003 ◽  
Vol 80 (4) ◽  
pp. 419-423 ◽  
Author(s):  
Eddy Esselink ◽  
Henrie van Aalst ◽  
Manuelle Maliepaard ◽  
Thijs M. H. Henderson ◽  
Niko L. L. Hoekstra ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Nuclear Magnetic
Sign in / Sign up

Export Citation Format

Share Document