1) Nonframework four-coordinated Al
非骨架四配位铝
2) non-framework aluminum
非骨架铝
1.
The type and the chemical state of non-framework aluminum and the related influence on zeolite acidity were investigated by means of 27Al MAS NMR,N2 adsorption-desorption,XRD Rietveld refinement.
采用27Al MAS NMR、N2吸附-脱附、IR等表征技术及XRD Rietveld结构精修的方法,通过清除和交换引入非骨架铝,探讨了USY沸石中非骨架铝的形态。
2.
Being treated by water vapor at 371 ℃, the non-framework aluminum species, transformed from part of the framework aluminum, had much effects on shape-selective disproportionation of toluene.
HZSM-5分子筛经过371℃水蒸汽处理后,分子筛的部分骨架铝脱出,形成非骨架铝物种,该非骨架铝物种对甲苯择形歧化反应具有较大影响。
3) thermal stability
非骨架铝
1.
It has been show that all ultrastable Y zeolites,especially FSEY and HSY,have betterthermal stability than NH_4Y zeolite.
ＸＲＤ、ＦＴ－ＩＲ和￣（２９）Ｓｉ、￣（２７）ＡｌＭＡＳＮＭＲ测试结果表明，水热处理过程中产生的非骨架铝可能是造成这种热稳定性变差的原因。
2.
It has been shown that all the ultrastable Y zeolites,especially FSEY and HSY,have better thermal stability than NH_4Yzeolite, However,after steam treatment, the thermal stability ofall ultrastable Y zeolites,especially FSEY and HSY,were decreased.
本文对Y沸石及超稳Y沸石的热稳定性进行了探讨,结果表明,各种超稳Y沸石的热稳定性都比Y沸石高;水热处理前各种超稳Y沸石热稳定性彼此相差较大,但经水热处理后差距变小并且晶格破坏温度都有所降低,非骨架铝可能是造成这种热稳定性变差的原因。
4) framework aluminum defect site
骨架铝空位
5) non-framework alumina
非骨架氧化铝
6) distorted tetrahedral-coordinated Al (DTA)
扭曲四配位铝
补充资料：四配
1.指颜渊﹑子思﹑曾参﹑孟轲。旧时以此四人配祀孔子庙。颜渊﹑子思居东，曾参﹑孟轲居西，通称四配。其始配之年:颜渊为三国魏齐王正始二年(见《三国志．魏志．三少帝纪》)，曾参为唐睿宗太极元年(见《新唐书．礼乐志五》)，孟轲为宋神宗元丰七年(见《宋史．神宗纪三》)，子思为宋度宗咸淳三年(见《宋史．度宗纪》)。 2.明袁宏道戏称孔子为饮宗，祀为酒圣，以阮籍﹑陶潜﹑王绩﹑邵雍为配祀。其《觞政．八之祭》云："凡饮必祭所始﹐礼也。今祀宣父为酒圣。夫无量不及乱﹐觞之祖也﹐是为饮宗。四配曰：阮嗣宗﹑陶彭泽﹑王无功﹑邵尧夫。"
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参考词条