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- B酸中心Bronsted acid sites
- 實(shí)驗結果還表明氨分子在B酸中心上優(yōu)先被吸附。The experimental results show that ammonia molecule is adsorbed preferentially on the B acid sites.
- 直接法合成HZSM-5型分子篩的B酸和L酸中心的NMR,EPR研究NMR AND EPR STUDIES ON B AND L ACID SITES OF HZSM-5 SYNTHESlSED BY DIRECT METHOD
- 中心heart
- 通過(guò)吡啶吸附的紅外光譜分析,發(fā)現B酸中心比L酸中心更容易結焦,而催化劑后期的活性是由L酸提供的。IR analysis of pyridine adsorption is used to investigate the coking behavior on acid sites of the HZSM-5 catalyst. It is concluded that coke on B acid sites is more than that on L acid and the activity of the aged catalyst is mainly contributed by L acids.
- 新發(fā)展起來(lái)的31P核磁共振技術(shù)可較好地實(shí)現B酸和L酸的酸中心分布、酸量及酸強度的定性和定量分析。Qualitative and quantitative analysis of acid site distribution,and acidity and acid strength of B and L acids can be carried out well by means of newly exploited ~(31)P NMR method.
- 中心的nuclear
- 強B酸strong Broensted acid
- 半胱氨酸cysteine
- 中心思想clou
- 氨酸amino acid
- 貿易中心entrepot
- B酸B acid
- 中心點(diǎn)pivot
- 她的成績(jì)是B+。She got a grade of B plus.
- 丙酮酸pyruvic acid
- 在中心centrally
- 丙酸monoprop
- 指揮中心command center
- 苯丙氨酸phenyl alanine
