一种用于由乙烯和丁烯通过歧化反应制丙烯的催化剂,其组成为A-R/D,活性组份A为钨、钼或铼的氧化物中的一种或几种,其重量担载量为0.5-20%;助剂R为碱金属或碱土金属元素,其重量担载量为0.05-10%;载体D为混合物,其中主要组份为分子筛(主要包括Y、β、SAPO系列、ZSM系列和MCM系列,其重量含量大于等于50%),其它组份为氧化铝、氧化硅及粘土等物质中的一种或几种。该催化剂用于由乙烯和丁烯歧化制丙烯的反应中,可以在固定床、流化床及浆态床等反应器中进行 ...
徐龙伢, 刘盛林, 谢素娟, 白杰
core
[Determination of perfluorinated compounds, antibiotics and pesticides in drinking water by automated solid phase extraction with ultra-performance liquid chromatography-tandem mass spectrometry]. [PDF]
Liang J +6 more
europepmc +1 more source
本實驗研究的目的,乃利用熱篩法或甲烷菌抑制劑(BES)的添加,將甲烷菌篩除,探討混合族群中非甲烷菌在四氯乙烯厭氧脫氯的過程中所扮演的角色。結果發現,當BES濃度由0 mM增加至200 mM,四氯乙烯的代謝不但沒有被抑制,反而具有促進的效果,顯示混合族群中的非甲烷族群,具有較佳的脫氯效果。當硫酸鹽濃度由5mM增加至20 mM時,熱篩組與未熱篩組都顯示出硫酸鹽對於脫氯的現象並無助益,而當硫酸鹽濃度由50 mM增加至200 mM時,熱篩組與未熱篩組都顯示出硫酸鹽對於脫氯的具有抑制的現象 ...
郭育仁
core
[Preparation of magnetic bifunctional materials for exosome capture from serum and phosphopeptide enrichment]. [PDF]
Wang ZR, Zheng HJ, Jia Q.
europepmc +1 more source
[Safety study of resin-based dental materials using gas chromatography-mass spectrometry techniques]. [PDF]
Li Y, Zeng Y, Du Z, Ren G.
europepmc +1 more source
[Research progress on high performance liquid chromatography stationary phases based on mixed mode]. [PDF]
Li SJ, Li Z, Tang ZX, Lyu M, Wang LT.
europepmc +1 more source
[Determination of six whitening ingredients in cosmetics by ultra performance liquid chromatography coupled with photodiode array detector and corona charged aerosol detector]. [PDF]
Li X +8 more
europepmc +1 more source
[Preparation of a chiral porous organic cage-bonded silica high performance liquid chromatography stationary phase and its application to the resolution of chiral compounds]. [PDF]
Wu JL +5 more
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[Determination of 31 perfluoroalkyl and polyfluoroalkyl substances in water by ultra performance liquid chromatography-triple quadrupole mass spectrometry combined with direct injection]. [PDF]
Yang C +6 more
europepmc +1 more source
[Determination of ergot alkaloids toxins in forage grass by ultra performance liquid chromatography-tandem mass spectrometry coupled with solid-phase supported liquid-liquid extraction]. [PDF]
Ren CX +5 more
europepmc +1 more source

