id	keyword
brj-23958	ammonia
brj-23958	catalyst
brj-23958	et al
brj-23958	doi
brj-23958	decomposition
brj-23958	hydrogen
brj-23958	cracking
brj-23958	fiber
brj-23958	article
brj-23958	zhang
brj-23958	steel
brj-23958	production
brj-23958	temperature