Copper on the inner surface of mesoporous TiO2 hollow spheres: a highly selective photocatalyst for partial oxidation of methanol to methyl formate

2019 ◽  
Vol 9 (22) ◽  
pp. 6240-6252 ◽  
Author(s):  
Changfu Li ◽  
Xuzhuang Yang ◽  
Guanjun Gao ◽  
Yuanyuan Li ◽  
Weida Zhang ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Methyl Formate ◽  
Hollow Spheres ◽  
Methanol Conversion ◽  
Mesoporous Tio2 ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol ◽  
Inner Surface ◽  
Tio2 Hollow Spheres

To raise the methyl formate (MF) selectivity at high methanol conversion is one of the most challenging topics for photocatalytic partial oxidation of methanol to MF.

scholarly journals Photocatalytic partial oxidation of methanol to methyl formate under visible light irradiation on Bi-doped TiO2via tuning band structure and surface hydroxyls

RSC Advances ◽  
2020 ◽  
Vol 10 (52) ◽  
pp. 31442-31452
Author(s):  
Yue Ma ◽  
Xuzhuang Yang ◽  
Guanjun Gao ◽  
Zhe Yan ◽  
Haiquan Su ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Partial Oxidation ◽  
Visible Light Irradiation ◽  
Methyl Formate ◽  
Light Irradiation ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol ◽  
Surface Hydroxyls ◽  
Doped Titania

Bi-doped titania is well studied for photocatalytic partial oxidation of methanol to methyl formate under visible light irradiation.

scholarly journals The Promotional Effects of ZrO2 and Au on the CuZnO Catalyst Regarding the Durability and Activity of the Partial Oxidation of Methanol

Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 345
Author(s):  
Hsiao-Yu Huang ◽  
Hao-I Chen ◽  
Yuh-Jeen Huang
Keyword(s):  
Partial Oxidation ◽  
Ignition Temperature ◽  
Aging Process ◽  
Accelerated Aging ◽  
Methanol Conversion ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol ◽  
Deactivation Rate Constant ◽  
Lower Temperature ◽  
Better Than

The promoter ZrO2 was applied to prevent Cu crystallites from sintering over CZ (ca. Cu 30 wt.% and Zn 70 wt.%) under partial oxidation of the methanol (POM) reaction. Gold was selected to promote the performance of CZrZ (ca. Cu 31 wt.%, Zr 16 wt.%, and Zn 53 wt.%) catalyst to overcome a high ignition temperature of 175 °C and CO selectivity (SCO) (>10% at T. > 200 °C). Experimentally, the deactivation rate constant of A5CZrZ (ca. Au 5 wt.%, Cu 31 wt.%, Zr 17 wt.%, and Zn 47 wt.%) and CZrZ was 1.7 times better than A5CZ (ca. Au 5 wt.%, Cu 31 wt.%, and Zn 64 wt.%) and CZ. The methanol conversion of CZrZ and A5CZrZ catalysts was kept higher than 70% for 12 h in an accelerated aging process. Meanwhile, the Au prompted more methoxy species oxidizing to formate on Cu+-rich A5CZrZ surface at lower temperature, and also improved CO transfer from formate reacting with moveable oxygen to form CO2. The SCO can lower to ca. 6% at 200 °C after adding 3–5% of gold promoter. These features all prove that the CZ catalyst with ZrO2 and Au promoters could enhance catalytic activity, lower the SCO and ignition temperature, and maintain good durability in the POM reaction.

Modulation of the selectivity in partial oxidation of methanol over CuZnAl catalysts by adding CO 2 and/or H 2 into the reaction feed

2015 ◽  
Vol 168-169 ◽  
pp. 14-24 ◽  
Author(s):  
Silvia R. González Carrazán ◽  
Robert Wojcieszak ◽  
Raquel. M. Blanco ◽  
Cecilia Mateos-Pedrero ◽  
Patricio Ruiz
Keyword(s):  
Partial Oxidation ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol

scholarly journals Partial Oxidation of Methanol Over Highly Dispersed Vanadia Supported on Silica SBA-15

2005 ◽  
Vol 105 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
C. Hess ◽  
Ian J. Drake ◽  
James D. Hoefelmeyer ◽  
T. Don Tilley ◽  
Alex T. Bell
Keyword(s):  
Partial Oxidation ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol ◽  
Highly Dispersed

Partial oxidation of methanol to produce hydrogen over CuZn-based catalysts

1997 ◽  
Vol 162 (1-2) ◽  
pp. 281-297 ◽  
Author(s):  
L. Alejo ◽  
R. Lago ◽  
M.A. Peña ◽  
J.L.G. Fierro
Keyword(s):  
Partial Oxidation ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol
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