The technology for bleaching of the starch glycoside surfactant was studied by using hydrogen peroxide as the major decoloring agent, coupled with magnesium sulfate, sodium silicate and EDTA as additive agents. The technic of decoloration was optimized through the orthogonal experimentation. Under the optimal experimental conditions, the resulting products exhibit good stability. After 72h stability test, only a little change of 1.01% by U-2001 spectrophotometer at absorbance 470 nm. The absorbance was observed by compared with the products before decoloration and after. The main composition and structure of the starch glycoside surfactant were analyzed by infrared spectrum (IR) and gas chromatography (GC). The experimental results show that the technics of decoloration for the starch glycoside surfactant are feasible and simple which may be useful for practical applications.

A novel desulfurizer was prepared to remove the sulfide in MTBE. The performance of the desulfurizer was investigated by L18(2×37) Orthogonal Test. The desulfurizer for MTBE was prepared by the impregnating technique, in which the transitional metal Fe series and Ag series compounds were used as active components, and the modified attapulgite clay as the carrier. In order to get the optimum conditions to desulfurization in MTBE, IR, XRD, TEM, XPS technology were used to study the desulfurization mechanism. Compare the desulfurization characterize before and after the experiment. The result shows that the desulfurizer made by 8% Fe series compound and 2% Ag series compound, and roasted at 300°C for 3 hours. The Sulfur content in MTBE was reduced from 789mg/kg to 124mg/kg. The desulfurization rate was reached to 84.18% (in normal temperature and pressure.). The removal effect is obvious. The result of this study can be applied for Removal sulfide in MTBE.

Fe2O3/attapulgite desulfurizer was prepared by impregnation, and was regenerated by use of heat air method. The desulfurization test from a gas containing 100 vol% H2S was carried out over attapulgite supported Fe2O3 in a fixed-bed system at atmospheric pressure and room. The effects of the chemical nature of Fe2O3 on desulfurization capacity were studied. Materials before and after the desulfurization test were characterized using FTIR and XRD. Materials after the regeneration test were characterized using XRD. The characterization results suggest that modification process does not change the structure of attapulgite. Iron species disperses inside channels and the outside surface in the crystalline phase of iron oxide. The material with iron oxide content of 40.0 wt% presented highest H2S uptake capacity. The deactivated that Fe2O3/attapulgite desulfurizer was regenerated 0.8L/min hot air in 323k, the regeneration efficiency reached 81.22%, by 4 times after regeneration can reach 51.9%.