id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-14700		cet-14700		6	.pdf	application/pdf	2722	127	46	The critical properties of hydrogen and the two lightest components of natural gas methane, and ethane are summarized in Table 1. The reduction of carbon dioxide generated using natural gas for electric energy production or domestic usage is the main factor suggesting the addition of hydrogen.	cache/cet-14700.pdf	txt/cet-14700.txt