纳米V2 O5催化剂的制备工艺实验研究

摘要

Taking refined diatomite as support and using mixed-miIIing method,a new type of V2 O5 cata-Iyst was successfuIIy prepared by geIatinating V2 O5 particIes and adding auxiIiary reagent. The infIuences of dosage of V2 O5 ,K2 SO4 and suIfur,roasting temperature on cataIytic properities were studied. The re-suIts show that the effects of dosage of V2 O5 on the techniques were highIy conspicuous,than dosage of suIfur and roasting temperature were prominent. When the dosage of K2 SO4 was 10% ~16% infIuence on the techniques is smaII. The optimaI technics conditions( mass proportion)was w( diatomite):w( V2 O5 ):w(K2SO4):w(suIfur)﹦100 :7 :16 :7,caIcination temperature 800 ℃.%用精制硅藻土作载体、V2 O5胶体为钒源、K2 SO4和硫磺粉为助剂，制备负载型纳米V2 O5催化剂，探讨了V2 O5用量、K2 SO4用量、硫磺用量和焙烧温度对催化性能的影响。结果表明，V2 O5用量影响非常显著，硫磺粉用量和焙烧温度影响较为显著，K2 SO4用量为10％~16％时影响不明显。催化剂制备最佳工艺条件为：硅藻土：V2 O5：K2 SO4：硫磺粉﹦100：7：16：7（质量比），焙烧温度800℃。