A process for continuously producing carbon fibers in a vapor phase by causing a carbon compound to contact a catalyst and/or a catalyst precursor compound in a heating zone. In this process, the carbon compound, the catalyst precursor compound and an additional component are supplied to the heating zone, and these components are subjected to a reaction under a reaction condition such that at least a portion of the additional component is present as a solid or liquid in the heating zone.

 
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< Porous material and method for manufacturing same, and electrochemical element made using this porous material

> Carbon fiber paper construction and manufacturing process

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