| Sintering is the most advanced evaluating ways whether thermal stability of Ti-PILCs can meet high strength catalyze cracking. The thermal stability can be incarnated through sintering. The thermal stability is the key for a Ti-PILCs to be applied in high temperature and high strength catalyze cracking in petrochemical industry successfullyCompared with Al-, Fe-, Zr-PILCs, Ti-PILCs is characterized by the large surface and porous, narrow porous distribution and large basal spacing, which would be very helpful to obtain a high activation and selectivity in catalyze cracking and deoxidize reducation. It is potential to apply to machine founding, drilling slurry, petroleum processing, chemical industry, environmental science and pelletization, as well as weaving, petroleum cleaning, rubber, structural material, medicine and sanitation, etc.In this paper, the basic structures and characteristic of sintered Ti-PILCs have been studied by using XRD,BET method, FT-IR,TG-DSC, SEM and TEM,and the porous distribution and mechanism by which sintered Ti-PILCs were formed have been discussed. The results showed that sintering temperature, sintering time, sintering speed and sintering ambience affected the physical and chemical properties of the sintered Ti-PILCs.That Ti-PILCs (d001=3.74nm) which obtained by using the synthetic conditions of Ti(n-C4H9)O)4 ( titanium) pillared clay(d001 = 1.283nm) in the study. After being sintered ,the results showed that the surface area of Ti-PILCs was reduced from S60℃= 409.1m2/g to S500℃= 374.3m2/g and S700℃ =362.5 m2/g, respectively, and the basal spacing was reduced from d001=3.74nm (60℃) to d600℃=3.67nm and d900℃=3.383nm, respectively. It is clear that there are a large anount of large porous and oxide pillar's distributing is uniformity in the sintered Ti-PILCs, and the thermal stability is over 900℃. its index exceed level of others in china.
|
PDF Full Text Request