| 摘要 |
Conversion of high-molecular-wt. hydrocarbons to low- molecular-wt. hydrocarbons (esp. liquefaction of coal) is carried out in the presence of at least one guanidinium cpd. (I). The process is pref. carried out by adding (I) to a mixt. of coal and solvent (e.g. coal oil), heating the mixt. atan intermediate temp. of 100-300 (esp. 200) deg. C for 1-30 min., and then heating the mixt. at the liquefaction temp. (e.g. 250-500 deg. C at 10-300 bar excess pressure). (I) is pref. guanidinium carbonate (Ia) or a mixt. of (Ia) with a guanidinium carboxylate, phenolate, sulphonate or alcoholate in a wt. ratio of 0.3-3:1, or a mixt. of (Ia) with the corresp. carboxylic acid, phenol, sulphonic acid or alcohol. (I) is pref. added in an amt. of 0.1-3 wt.% based on the coal feed. Addn. of (I) in small amts. (up to 10 wt.%) increases the yield of liq. hydrocarbons (e.g. from 1-5 to 10-20 wt.% based on coal feed). |
