id	keyword
brj-22011	pks
brj-22011	size
brj-22011	carbon
brj-22011	et al
brj-22011	gac
brj-22011	particle
brj-22011	pac
brj-22011	adsorption
brj-22011	surface
brj-22011	activation
brj-22011	doi
brj-22011	particle size
brj-22011	range
brj-22011	area