主办单位：煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
Table1
Co/CNC、Co0.8Cu0.2/CNC和Cu/C催化剂的ICP-AES测试
| Catalyst | Co w/% | Cu w/% | Co-Cu initial composition (molor ratio) |
Cu-Co final composition (molor ratio) |
Final metals/catalyst (mmol·100 mg−1) |
| Co/CNC | 20.90 | − | − | − | 0.354 |
| Co0.8Cu0.2/CNC | 18.50 | 4.36 | 80∶20 | 82∶18 | 0.382 |
| Cu/C | 49.73 | − | − | − | 0.782 |
Table1
CO和CO2加氢制甲烷过程中涉及的主要反应及其相关的基本热力学数据
| Entry | Reaction | ΔrH0298K/(kJ·mol−1) | ΔrS0298K/(J·K−1·mol−1) | ΔrG0298K/(kJ·mol−1) | n(H2)/n(COx) | Rv |
| R1 | CO + 3H2 = CH4 + H2O | −206.14 | −214.63 | −142.15 | 3 | 0.5 |
| R2 | CO2 + 4H2 = CH4 + 2H2O | −164.98 | −172.56 | −113.53 | 4 | 0.6 |
| R3 | CO = 1/2C + 1/2CO2 | −86.23 | −87.93 | −60.01 | − | 0.5 |
| R4 | CO + H2O = CO2 + H2 | −41.17 | −42.08 | −28.62 | 1 | 1 |
| R5 | CH4 = C + 2H2 | 74.85 | 80.84 | 50.75 | − | 2 |
| R6 | C + 2H2O = CO2 + 2H2 | 90.13 | 91.72 | 62.78 | 2 | 1.5 |
| R7 | 1/2CO2 + 1/2CH4 = CO + H2 | 123.65 | 128.35 | 85.39 | 1 | 2 |
| R8 | C + H2O = CO + H2 | 131.29 | 133.79 | 91.40 | 1 | 2 |
| Notes: n(H2)/n(COx) is the stoichiometric H2/CO or H2/CO2 molar ratio in the reactants or products; Rv is the stoichiometric volume-expanding or molecule-increasing factor, defined as the number of gaseous product molecules divided by the number of gaseous reactant molecules for the corresponding reaction. | ||||||
主办单位：煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会
