In situ XRD and HRTEM studies on the evolution of the Cu/ZnO methanol synthesis catalyst during its reduction and re-oxidation

2004 ◽  
Vol 6 (18) ◽  
pp. 4522 ◽  
Author(s):  
Tamara M. Yurieva ◽  
Lyudmila M. Plyasova ◽  
Vladimir I. Zaikovskii ◽  
Tatyana P. Minyukova ◽  
Alfred Bliek ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
In Situ Xrd ◽  
Methanol Synthesis Catalyst

scholarly journals Inverse ZrO2/Cu as a highly efficient methanol synthesis catalyst from CO2 hydrogenation

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Congyi Wu ◽  
Lili Lin ◽  
Jinjia Liu ◽  
Jingpeng Zhang ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Formation Rate ◽  
Value Added ◽  
Precipitation Method ◽  
Intrinsic Activity ◽  
In Situ Xrd ◽  
Highly Active ◽  
Methanol Formation ◽  
Cu Catalysts

AbstractEnhancing the intrinsic activity and space time yield of Cu based heterogeneous methanol synthesis catalysts through CO2 hydrogenation is one of the major topics in CO2 conversion into value-added liquid fuels and chemicals. Here we report inverse ZrO2/Cu catalysts with a tunable Zr/Cu ratio have been prepared via an oxalate co-precipitation method, showing excellent performance for CO2 hydrogenation to methanol. Under optimal condition, the catalyst composed by 10% of ZrO2 supported over 90% of Cu exhibits the highest mass-specific methanol formation rate of 524 gMeOHkgcat−1h−1 at 220 °C, 3.3 times higher than the activity of traditional Cu/ZrO2 catalysts (159 gMeOHkgcat−1h−1). In situ XRD-PDF, XAFS and AP-XPS structural studies reveal that the inverse ZrO2/Cu catalysts are composed of islands of partially reduced 1–2 nm amorphous ZrO2 supported over metallic Cu particles. The ZrO2 islands are highly active for the CO2 activation. Meanwhile, an intermediate of formate adsorbed on the Cu at 1350 cm−1 is discovered by the in situ DRIFTS. This formate intermediate exhibits fast hydrogenation conversion to methoxy. The activation of CO2 and hydrogenation of all the surface oxygenate intermediates are significantly accelerated over the inverse ZrO2/Cu configuration, accounting for the excellent methanol formation activity observed.

IN-SITU REDUCTION OF A METHANOL SYNTHESIS CATALYST IN A THREE-PHASE SLURRY REACTOR

1987 ◽  
Vol 5 (1) ◽  
pp. 77-88 ◽  
Author(s):  
Ashok Sawant ◽  
Myong K. Ko ◽  
Vetkav Parameswaran ◽  
Sunggyu Lee ◽  
Conrad J. Kulik∗
Keyword(s):  
Methanol Synthesis ◽  
Slurry Reactor ◽  
In Situ Reduction ◽  
Methanol Synthesis Catalyst ◽  
Three Phase

In situ carbon-13 solid-state NMR study of the Cu/ZnO/Al2O3 methanol synthesis catalyst

1992 ◽  
Vol 114 (22) ◽  
pp. 8552-8559 ◽  
Author(s):  
Noel D. Lazo ◽  
David K. Murray ◽  
Matthew L. Kieke ◽  
James F. Haw
Keyword(s):  
Solid State ◽  
Methanol Synthesis ◽  
Solid State Nmr ◽  
Nmr Study ◽  
Methanol Synthesis Catalyst

In situ NMR studies of a Cu/ZnO/Al2O3 methanol synthesis catalyst

1991 ◽  
Vol 9 (1-2) ◽  
pp. 129-136 ◽  
Author(s):  
A. Bendada ◽  
G. Chinchen ◽  
N. Clayden ◽  
B.T. Heaton ◽  
J.A. Iggo ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Nmr Studies ◽  
Methanol Synthesis Catalyst ◽  
In Situ Nmr

scholarly journals In Situ Study of Catalytic Processes: Neutron Diffraction of a Methanol Synthesis Catalyst at Industrially Relevant Pressure

2013 ◽  
Vol 52 (19) ◽  
pp. 5166-5170 ◽  
Author(s):  
Timur Kandemir ◽  
Frank Girgsdies ◽  
Thomas C. Hansen ◽  
Klaus-Dieter Liss ◽  
Igor Kasatkin ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Methanol Synthesis ◽  
In Situ Study ◽  
Methanol Synthesis Catalyst ◽  
Catalytic Processes

Zirconium phase transformations observed by “in-situ” XRD analysis

Vacuum ◽  
2012 ◽  
Vol 86 (6) ◽  
pp. 785-788 ◽  
Author(s):  
Jan Riha ◽  
Pavol Sutta ◽  
Andrej Vincze ◽  
Rostislav Medlin
Keyword(s):  
Phase Transformations ◽  
Xrd Analysis ◽  
In Situ Xrd

Evolution of Phase Transformation Behavior in Li(Mn1.5Ni0.5)O4 Cathodes Studied By In Situ XRD

2011 ◽  
Vol 158 (8) ◽  
pp. A890 ◽  
Author(s):  
Kevin Rhodes ◽  
Roberta Meisner ◽  
Yoongu Kim ◽  
Nancy Dudney ◽  
Claus Daniel
Keyword(s):  
Phase Transformation ◽  
Transformation Behavior ◽  
Phase Transformation Behavior ◽  
In Situ Xrd
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