L24_11_18_10 - CO 2 + H 2 Fe 3 O 4 CH 4 + H 2 O 800 C, High...

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Chem 2070 Reading For Today ʼ s Lecture: 192-216 Remaining Mastering Chem Assignment #12: 11/19 For Tuesday: 217-227 Assignment #13: 11/22 All Due @ 11:59 pm Assignment #14: 12/1 Assignment #15: 12/6 Thursday, November 18, 2010
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Why Solar? C x H y + xs O 2 CO 2 + H 2 O + HEAT Our energy policy: gas (2.70) coal (2.96) biomass (1.21) nuclear (0.83) hydro (0.29) renewable (0.29) oil (4.52) By 2050: Global Population = 9-11 billion Thursday, November 18, 2010
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Reserves Resources Oil 40 - 80 yrs 50 - 150 yrs Gas 70 - 160 yrs 200 - 600 yrs Coal 225 yrs 2100 yrs JUST KEEP BURNING? Thursday, November 18, 2010
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CARBON CONTENT Thursday, November 18, 2010
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AN OVERLOOKED CO 2 SOURCE N 2 + 3 H 2 Fe/Ru on Al 2 O 3 2 NH 3 400 ºC, 400 atm Δ Hº = -11 kcal/mol Δ Gº = -5 kcal/mol Fertilizer Where does the hydrogen come from? Coal and Natural Gas! CO + H 2 O Water-Gas Shift High T, High P
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Unformatted text preview: CO 2 + H 2 Fe 3 O 4 CH 4 + H 2 O 800 C, High P Ni Steam Reforming CO + 3 H 2 Thursday, November 18, 2010 CO 2 DATA 1000 ppm (OSHA) 2050 est. = 550 - 750 ppm Antarctic ice cores : 210 - 300 ppm for past 650,000 yrs Thursday, November 18, 2010 TWO GOALS FOR SOLAR ENERGY: Photovoltaics (Solar Panels) Electricity Absorber/PV Si Solar Cells Make Carbon Neutral Fuels H 2 O (l) H 2 (g) + 1/2 O 2 (g) H = + 286 kJ Thursday, November 18, 2010 Cost (cents/kW hr) Why? 6 12 18 24 30 Coal Gas Oil Wind Nuclear Solar 1-4 2-5 6-8 5-7 6-7 25-50 COSTS OF ELECTRICITY 85 %: Fossil (Oil, gas, coal) 0.8 % Biomass 1 ppm wind and solar Sources: Thursday, November 18, 2010 THE SOLAR SOLUTION? DOW Chemical: CIGS CuIn x Ga 1-x Se 2 Thursday, November 18, 2010...
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This note was uploaded on 04/06/2011 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell University (Engineering School).

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L24_11_18_10 - CO 2 + H 2 Fe 3 O 4 CH 4 + H 2 O 800 C, High...

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