擇形催化劑 的英文怎麼說
中文拼音 [zháixíngcuīhuàjì]
擇形催化劑
英文
shape-selective catalyst-
( 9 ) by studying matching between catalytic converter and exhaust gas system, the conclusions having been gotten as follow : " purifying step by step and driving step by step " and " mental substrate and chinaware substrate being used in same engine " being the laying principles in exhaust gas system, which can solve the contradiction between high converting efficiency of exhaust emission and small loss of power, fuel economics, the rapid light - off and laying difficulty of catalyst
（ 9 ）進行了催化轉化器與排氣系統的匹配研究，對于催化劑的布置，提出了「分級凈化，逐級推動」的原則；對于載體形式的選擇，提出了「金屬載體和陶瓷載體復合」使用的原則。這樣可以良好的解訣催化轉化器與發動機匹配時，排氣污染物高凈化率與動力性經濟性損失小之間的矛盾、快速起燃和結構布置困難的矛盾。The ratio of tetraethyloxysilane ( teos ) : ethanol : distilled water is 1 : 3 : 4. n - n " dimethyl formamide ( dmf ) was used as solvent and drying control chemical additive ( dcca ) in a proportion of 0. 3 dmf / ethanol volume ratio. drops of hf / hc1 mixture acid was added to promote hydrolysis ( ph = 2 )
溶劑的選擇對基質凝膠孔的形狀基本沒有影響，但對其孔徑分佈有較大影響:在hf / hci混合酸催化情況下， dmf溶劑的樣品孔徑最小， dmf /乙醇混合溶劑的其次，乙醇溶劑的樣品孔徑最大。Regioselectivity in catalytic oxidation of alkanes using zeolite - encapsulated catalyst
沸石負載釩絡合物催化劑對烷烴氧化反應的擇形選擇性
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