Titanium dioxide is an important material for catalytic reactions as a promoter, support, catalyst, and additive. In this paper, titania extrudates were prepared from industrial raw material by an extrusion method and then calcined at different temperatures. Results show that there are nanostructures with anatase phase from 450o to 850oC because the presence of SO₄^2– delays the formation of rutile nucleation up to 950oC,and the morphology is irregular and smooth at 950oC. The SO₄^2– ions and crystallinegrowth affect the properties of titania extrudates at various calcination temperatures. At temperatures below 650oC, the effect of SO₄^2–removal is more than the effect of crystalline growth on the properties of the extrudates. But at temperatures above 650oC, the effect of crystal growth is dominant because of mobility of atoms, although more sulfate ions are exited. It decreases open pore volume and increases strength and attrition resistance.

二氧化钛是催化反应的重要材料，可作为促进剂、载体、催化剂和添加剂。本文以工业原料为原料，采用挤压法制备二氧化钛挤出物，然后在不同温度下进行煅烧。_{结果表明,由于SO 4} ^2–的存在延迟了金红石形核的形成,在450oC至850oC温度范围内均出现锐钛矿相纳米结构,且在950oC时形貌不规则且光滑。SO ₄ ^2-离子和晶体生长会影响二氧化钛挤出物在不同煅烧温度下的性能。_{在温度低于 650oC 时，SO 4} ^2–的影响去除不仅仅是晶体生长对挤出物性能的影响。但在650℃以上的温度下，尽管有更多的硫酸根离子逸出，但由于原子的迁移性，晶体生长的影响占主导地位。它减少开孔体积并增加强度和耐磨性。