NOVELTY - Generation of synthetic motor fuels and additives to oil fuels, 1-4C alcohols, hydrogen, methane, synthesized gas (hydrogen and carbon dioxide) by hydrothermal treatment of carbonaceous compounds, comprises: (a) providing two-stage process operated under supercritical conditions of water and carbon dioxide; (b) feeding aqueous suspension of carbonaceous compound and alkali metal or alkaline-earth metal catalyst through first stage gasification reactor; and (c) feeding reaction products from the first stage to the second stage over a copper-zinc catalyst.    USE - The method is useful for generating synthetic motor fuels and additives to oil fuels, 1-4C alcohols, hydrogen, methane, synthesized gas (hydrogen and carbon dioxide).    ADVANTAGE - The method: improves wastes content of coal slack; reduces or eliminates the need for additional oxidant at the first stage; provides improved products with total carbon conversion at much lower temperatures; provides extended range of generated synthetic motor fuels, which are ready to use without any additional processing; and utilizes catalyst having improved activity and selectivity.    DETAILED DESCRIPTION - Generation of synthetic motor fuels and additives to oil fuels, 1-4C alcohols, hydrogen, methane, synthesized gas (hydrogen and carbon dioxide) by hydrothermal treatment of carbonaceous compounds, comprises either: (a) providing a two-stage process operated under the supercritical conditions of water and carbon dioxide, including a first stage gasification reactor having a reactor zone for the conversion of carbonaceous compounds and a second stage reactor for the conversion of the products of the first stage, (b) feeding an aqueous suspension of carbonaceous compound and an alkali metal or alkaline-earth metal catalyst through the first stage gasification reactor as a supercritical fluid at a volume velocity of 0.01-0.05 g of carbon/cm3/hour, at a carbon/catalyst mole ratio of 70/1-90/1, at a temperature of 390-450 degrees C, and under a pressure of 225-500 bars, and (c) feeding the reaction products from the first stage to the second stage over a copper-zinc catalyst at 200-280 degrees C and under the pressure of at least 100 bars so that any gases generated in the first stage are converted into 1-4C alcohols fraction with a weight ratio of 1-2C to 3-4C of 0-35% to 100-65%; or (a) as above per se, (b1) providing an electrolyzer with a power of 0.25 W, that generates reactive hydroxy species which are supplied to the reactive zone and function as a catalyst, (c1) feeding a aqueous suspension of carbonaceous compound and reactive hydroxy species through the first stage gasification reactor as a supercritical fluid at a volume velocity of 0.01-0.05 g of carbon/cm3/hour, at a carbon/catalyst mole ratio of 70/1-90/1, at a temperature of 390-450 degrees C, and under a pressure of 240 bars, and (d1) feeding the reaction products from the first stage to the second stage over a copper-zinc catalyst at 200-280 degrees C and under the pressure of at least 100 bars so that any gases generated in the first stage are converted into 1-4C alcohols fraction with a weight ratio of 1-2C to 3-4C of 1/4. An INDEPENDENT CLAIM is also included for an apparatus for generation of synthetic motor fuels and additives to oil fuels, 1-4C alcohols, hydrogen, methane, synthesized gas (hydrogen and carbon dioxide) by hydrothermal treatment of carbonaceous compounds, comprising: a two-stage carbon gasification process operated under the supercritical conditions of water and carbon dioxide; the first stage gasification reactor having a reactor zone for the conversion of carbonaceous compounds; the second stage reactor having a reactor zone for the conversion of the products of the first stage reactor; an electrolyzer having a power of 0.25 W to generate reactive hydroxy species to be supplied to the reactive zone and function as a catalyst; means for feeding a aqueous suspension of carbonaceous compound and reactive hydroxy species through the first stage gasification reactor as a supercritical fluid at a volume velocity of 0.01-0.05 g of carbon/cm3/hour, at a carbon/catalyst mole ratio of 70/1-90/1, at 390-450 degrees C, and under a pressure of 240 bars; and means for feeding the reaction products from the first stage reactor to the second stage reactor over a copper-zinc catalyst at 200-280 degrees C and under a pressure of at least 100 bars so that any gases generated in the first stage are converted into 1-4C alcohols fraction having a weight ratio of 1-2C to 3-4C of 1/4.