Reporter: Sun Beiqi
Supervisor: Prof. Mo
Date:
3/18/2016
Outline
1. Introduction
2. Hydrogenation of Gaseous CO2 to CH3OH
3. CO2 Capture from Air and Conversion to
CH3OH
4. Conclusions and Reflections
2
Introduction
1.Increase in global energy demand fuelled by
fossil fuel use has led to concentration of CO2
and global warming.
2.Carbon capture and sequestration (CCS)
3.Carbon capture and recycling (CCR) approach,
CO2 is recycled back to fuels and materials.
CH3OH is the best choice.
3
Hydrogenation of Gaseous CO2 to CH3OH
• Reaction:
PEHA
4
Hydrogenation of Gaseous CO2 to CH3OH
5
Hydrogenation of Gaseous CO2 to CH3OH
• Hydrogenation Catalysts
6
Hydrogenation of Gaseous CO2 to CH3OH
• Superbases
TMG:
DBU:
7
Hydrogenation of Gaseous CO2 to CH3OH
• Other factors
8
Hydrogenation of Gaseous CO2 to CH3OH
Hydrogenation of Gaseous CO2 to CH3OH
• PEHA content and
solvents:
10
Hydrogenation of Gaseous CO2 to CH3OH
11
Hydrogenation of Gaseous CO2 to CH3OH
• Best reaction conditions
12
CO2 Capture from Air and Conversion to CH3OH
• Reaction:
13
CO2 Capture from Air and Conversion to CH3OH
triglyme:
14
Conclusions
• Advantages
• Good product. The first example of CO2 capture from air
and direct conversion to methanol with a homogeneous
catalyst.
• High yield. Up to 79% of the CO2 captured from air was
converted to CH3OH.
• Simple separation. CH3OH can be simply distilled out of
the reaction mixture.
• Fine TON. Up to 1850 in 5 runs.
15
Conclusions
• Disadvantages
Base is necessary for capture of CO2. PEHA, 10¥/g. BASE-FREE!
Use of organic Solvent. THF, triglyme, etc. The best choice should
be water.
Expensive Ruthenium catalyst. Fe should be much more better.
Long time.79% yield took 200 h.
High temperature. 155℃
TON is not high enough. 520 in 1 run.
16
Reflections
谢谢大家！