NOVELTY - Controlling thermal conversion of a carbonaceous feedstock, comprises exposing the feedstock to predetermined temperatures and predetermined pressures for predetermined amounts of time in chambers to produce a gas product and a solid product, sequestration enabling a portion of the carbon by creating associated Lewis acid sites, sequestering noxious chemicals in the chambers using the sequestration enabled carbon, and controlling the constituents of the gas product using feedback, there providing a predictable and stable gas product from an unknown and/or variable feedstock.    USE - The method is useful for controlling thermal conversion of a carbonaceous feedstock for producing a non-wetting carbon product, preferably carbon nanotube or carbon fullerene (all claimed), sequestration enabled carbon, activated Carbon, elemental Carbon, and carbon nanowires.    ADVANTAGE - The method is capable of controlling thermal conversion of a carbonaceous feedstock with high purity, in an efficient and environmentally friendly manner.    DETAILED DESCRIPTION - Controlling thermal conversion of a carbonaceous feedstock, comprises exposing the feedstock to predetermined temperatures and predetermined pressures for predetermined amounts of time in chambers to produce a gas product and a solid product, sequestration enabling a portion of the carbon by creating associated Lewis acid sites, sequestering noxious chemicals in the chambers using the sequestration enabled carbon, and controlling the constituents of the gas product using feedback, there providing a predictable and stable gas product from an unknown and/or variable feedstock. The gas product is methane, carbon monoxide or hydrogen, and noxious chemicals and the solid product is carbon. An INDEPENDENT CLAIM is included for a system for the controlled thermal conversion of a carbonaceous feedstock, comprising a thermal conversion unit for exposing the feedstock, and a feedback loop for controlling the constituents of the gas product.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of components of a combined cycle carbonaceous feedstock conversion system.    Pyrolysis unit (12)    Airlock feeder (14)    Air removal feeder (15)    Sequestration agent injector (25)    Non-wetting agent injector. (27)