Abstract: The present application relates to sofa with a turnable backrest, including a sofa seat frame, a backrest body, and an extension mechanism, wherein the backrest body is connected to the sofa seat frame through the extension mechanism; the extension mechanism is configured to turn and flatten the backrest body from a backrest position of the sofa seat frame to a position above a sitting position, and configured to turn the backrest body back to the backrest position.

Abstract: Activated carbons with high surface areas are produced from a synergistic activation effect triggered at high temperatures by a predetermined combination of chemical activation agents derived from weak acidic salts, and/or weak basic salts, and/or neutral salts, and/or compounds. In one embodiment, a method of the present invention comprises mixing a carbon precursor with a first component comprising a first salt and at least one second component selected from the group consisting of a second salt, a compound and combinations thereof, in an inert environment or in carbon dioxide and/or steam environment.

Abstract: Activated carbons with high surface areas are produced from a synergistic activation effect triggered at high temperatures by a predetermined combination of chemical activation agents derived from weak acidic salts, and/or weak basic salts, and/or neutral salts, and/or compounds. In one embodiment, a method of the present invention comprises mixing a carbon precursor with a first component comprising a first salt and at least one second component selected from the group consisting of a second salt, a compound and combinations thereof, in an inert environment or in carbon dioxide and/or steam environment.