Progress Report

Zhou Jingjie2013/10/16

The addition of DMP

2CH3OH + CO2 （ CH3O） 2CO + H2O

(CH3O)2C(CH3)2 +H2O→ 2CH3OH+ (CH3)2COCH3OH

H2O

the reversible reaction hinders final production quantity

inactivation of catalysts

Water existence

TEM image of spindle CeO2

Effect of the content of DMP

DMP/ml DMC/(mmol/g)0 8.43065

1.2 19.096952.4 26.994833.6 28.242984.8 27.007837.2 24.0630211.8 20.10754

Effects of the amount of DMC on the amounts of DMPReaction conditions：T=140℃， t=2h,mcat=0.1g

Effect of Reaction Time

t/h DMC/(mmol/g)2 28.242984 29.86926 39.04383

12 44.1847924 57.02999

Effects of the amount of DMC on reaction timeReaction conditions： T=140 ℃VDMP=3.6ml,mcat=0.1g

Effect of the content of Catalyst

mcat/g DMC/(mmol/g) DMC/mmol0.5 6.66451 3.332260.1 28.24298 2.824298

0.05 35.54438 1.77722

Effects of the amount of DMC on the amount of catalyst Reaction conditions： T=140 ℃VDMP=3.6ml,t=2h

H2R, S2R

Thermodynamics calculation

(CH3O)2C(CH3)2 +H2O 2CH3OH+ (CH3)2CO

2CH3OH + CO2 （ CH3O） 2CO + H2O

298K， 0.1MPa(real liquid)

413.15K， 8MPa（ saturated vapor）

413.5K， 8MPa（ real liquid）

ΔH ， ΔS

Tb， 0.1MPa(Saturated vapor)

413.15K， 8MPa（ Ideal gas）

Tb， 0.1MPa（ Ideal gas）

ΔvH, ΔvS

-H1R, -S1RΔHig, ΔSig

-ΔvH, -ΔvS

The Liquid Methanol Reforming

CH3OH+H2O=CO2+3H2

2CH3OH + CO2 (CH3O)2CO + H2O

catalyst CeO2 Pt/CeO2 Pt/Al2O3 和 CeO2 Pt/TiO2 和 CeO2

DMC/(mmol/g) 3.82040 0.46732 3.17957 4.09615

H2O

CO2

Low activity

Destruct the acid and basic sites

Cover the crystal surface of （ 111 ） The effect of the precursor

T/K P/MPa deltaH/KJ deltaS/(J/K) deltaG/KJ K

413.15 5 125.682 394.329 -37.235 5.11E+04

XRD

XRD patterns of CeO2

TEM/HRTEM images and structural model of CeO2 spindles： (a) TEM image (b) HRTEM image

(b)

((111)

0.308nm

(111)

2nm

(a)

2um

TEM

12

TEM/HRTEM images and structural model of Pt/CeO2 spindles： HRTEM image

(110)

(100)

EDS

Element Wt % At % C K 32.14 41.05 O K 60.51 58.02 PtM 01.50 00.12 CeL 04.59 00.50 CuK 01.26 00.30

EDS spectrum of Pt/CeO2

TPD

CO2-TPD patterns of Pt/CeO2 and CeO2

NH3-TPD patterns of Pt/CeO2 and CeO2

Coprecipitation method

*将硝酸盐溶解在去离子水中，将离子溶液加入到 CeO2中*加 25%的氨水溶液直至 PH=9.5，在 290K搅拌 1h*沉淀用 JGWP04700膜过滤，用去离子水洗涤*353K干燥 12h*在 H2氛围 673K还原 1h

*抽真空 673K，焙烧 30min

Work plan

Finish the experiment of the addition of DMP

*finish the calculation of the equation of the addition of DMP

Choose the feasible catalyst for the liquid methanol reforming *find the reason why the catalyst is not efficient

*look for the feasible catalyst， change the catalyst production method

Thanks for Your Attention!

Qs & As