简介:ThemesoporousAl-SBA-15zeolitewasobtainedviaimpregnationofpuresilica-basedSBA-15zeolitewithaluminumnitrate.TheAl-SBA-15samplewascalcinedinairat800℃for6handhydrothermallytreatedatnear100℃for120h,respectively,andthenthethermalandhydrothermalstabilityofAl-SBA-15samplewasinvestigatedbyX-raydiffractometry(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM)andnitrogenadsorptionanddesorptiontechniques.TheAl-SBA-15samplewasalsostudiedby27Alnuclearmagneticresonance(27AlNMR)andammoniatemperatureprogrammeddesorption(NH3-TPD)techniques.Inaddition,thecatalyticactivityofAl-SBA-15zeolitewasinvestigatedbytheFriedel-Craftsreactionsof2,4-di-tert-butylphenolwithcinnamylalcohol.ThetestresultsshowedthatthethermalandhydrothermalstabilityofAl-SBA-15zeolitewasbetterthanthatofSBA-15zeo-lite.TheAl-SBA-15zeolitesamplepreparedbyimpregnationmethodexhibitsmoreframeworkaluminumspeciesandAl-O-Siunits.Therefore,thenumberofthesurfacehydroxylgroupswasreduced,resultinginthestabilizationofframeworkstructureofAl-SBA-15zeolite.Thealuminumspeciescanformweakandmedium-strongacidsiteswithcatalyticactivity.
简介:钻井速度的加快、勘探难度的加大对气测录井仪的智能化、自动化、稳定性、检测精度等提出了更高的要求。为适应这一需要,在简介中国电子科技集团第二十二研究所开发研制的SQZ500型智能气测仪的总体设计结构及分析流程的基础上,重点阐述了软硬件结构设计组成、功能和技术优势。与传统气测仪相比,该智能化气测仪智能化、自动化、稳定性、检测精度等有了明显的提高,其突出特点是全烃、烃组分及非烃检测实现模块化设计,色谱分析状态实现在线监测和烃组分含量分析采用小波算法。现场试验应用表明,该气测仪稳定性、可靠性好,精度高,可满足目前勘探开发条件下对气测录井的要求。
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