id	keyword
eurjchem-2581	silica
eurjchem-2581	sand
eurjchem-2581	samples
eurjchem-2581	chemistry
eurjchem-2581	journal
eurjchem-2581	european
eurjchem-2581	synthesis
eurjchem-2581	acid
eurjchem-2581	sèmè
eurjchem-2581	figure
eurjchem-2581	ray