TY - JOUR
T1 - In situ neutron diffraction under high pressure - Providing an insight into working catalysts
AU - Kandemir, Timur
AU - Wallacher, Dirk
AU - Hansen, Thomas
AU - Liss, Klaus Dieter
AU - Naumann Dalnoncourt, Raoul
AU - Schlögl, Robert
AU - Behrens, Malte
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/5/1
Y1 - 2012/5/1
N2 - In the present work the construction and application of a continuous flow cell is presented, from which neutron diffraction data could be obtained during catalytic reactions at high pressure. By coupling an online gas detection system, parallel structure and activity investigations of working catalysts under industrial relevant conditions are possible. The flow cell can be operated with different feed gases in a wide range from room temperature to 603 K. Pressures from ambient up to 6 MPa are applicable. An exchangeable sample positioning system makes the flow cell suitable for several different goniomter types on a variety of instrument beam lines. Complementary operational test measurements were carried out monitoring reduction of and methanol synthesis over a Cu/ZnO/Al 2O 3 catalyst at the high-flux powder diffraction beamline D1B at ILL and high-resolution diffraction beamline Echidna at ANSTO.
AB - In the present work the construction and application of a continuous flow cell is presented, from which neutron diffraction data could be obtained during catalytic reactions at high pressure. By coupling an online gas detection system, parallel structure and activity investigations of working catalysts under industrial relevant conditions are possible. The flow cell can be operated with different feed gases in a wide range from room temperature to 603 K. Pressures from ambient up to 6 MPa are applicable. An exchangeable sample positioning system makes the flow cell suitable for several different goniomter types on a variety of instrument beam lines. Complementary operational test measurements were carried out monitoring reduction of and methanol synthesis over a Cu/ZnO/Al 2O 3 catalyst at the high-flux powder diffraction beamline D1B at ILL and high-resolution diffraction beamline Echidna at ANSTO.
KW - Heterogeneous catalysis
KW - High-pressure sample environment
KW - In situ characterization
KW - Structureactivity correlation
UR - http://www.scopus.com/inward/record.url?scp=84856376353&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2012.01.019
DO - 10.1016/j.nima.2012.01.019
M3 - 文章
AN - SCOPUS:84856376353
VL - 673
SP - 51
EP - 55
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -