Preparation for porous titanium material with dimethylbutylsulfonated lignin ammonium as a template

Dimethyl-butyl-sulfonated lignin ammonium chloride amphoterics was composed with alkali lignin as raw material. Then porous titanium material was prepared by sol-gel method with it as template. Analysis results were that nitrogen content of porous titanium material was 1.360%, sulphur content was 1.860%. Sulphonated structure and quaternary amine were identified in the product by FT-IR and 1H NMR. Bromophenol blue and methylene blue experiments showed that products had amphoteric compound and dissolved in alkaline, neutral and dilute acid solution. With the increasing mass ratio of template to Ti(OiPr)_4, specific surface area of porous titanium material increased. Continue to increase the amount of template and the specific surface area was down. N2 nadsorption-desorption isotherm and pore size distribution analysis showed that pore size distribution of this product was wider. XRD analysis showed that there was a peak at 2θ=25.1, showing that porous titanium material was crystal and it mainly existed in the form of anatase. Calcined porous material had TiO2 characteristic absorption peaks, but there were still a few traces of lignin in it. Therefore an eventual compromise was got, when the mass ratio between dimethyl-nbutyl-sulfonated lignin and Ti(OiPr)_4 was 0.65∶1 and calcining temperature was 450 ℃, porous titanium material of largest specific surface was made in the form of anatase.