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- PREPARATION OF A NOVEL SHAPE SELECTIVE CATALYST OF TOLUENE DISPROPORTIONATION FOR P-XYLENE 制取對二甲苯的新型甲苯擇形催化劑的研制
- Keywords monomethylamine;mordenite;shape selective catalyst;modification by ion exchange; 甲胺;絲光沸石;擇形催化劑;離子交換改性;
- The catalytic dewaxing (CDW) of lube oil fractions with shape selective zeolite catalyst before and after the removal of basic nitrogen was compared. 本文比較了潤滑油餾分脫除堿性氮化物前后的催化降凝效果(采用擇形分子篩崔化劑)。
- The olefines (mainly C4 olefines)in the liquefied petroleum gas under the action of a selective catalyst were polymerized to form heigher molecular weight diners and trimers. 石油液化氣中的烯烴(主要是碳四烯烴)在定向催化劑的作用下,選擇疊合成分子量較大的聚合體。
- Selectoforming process was the first commercial catalytic process employing a shape selective zeolite catelyst. 選擇重整工藝是使用擇形沸石催化劑的第一個(gè)商業(yè)催化工藝。
- A highly selective catalyst for ODP is obtained by oxidizing CNF in concentrated HNO_3 and using(NH_4)_2HPO_4 as precursor for phosphoric oxides. At 500℃,a 39.63% selective to propene is achieved at a 42.07% propane conversion. 以磷酸氫二銨為前驅體;負載于經(jīng)液相氧化處理的CNF上可以得到高選擇性的ODP過(guò)程催化劑;在500℃下;丙烷轉化率為42.;07%25時(shí);丙烯選擇性達到39
- Indcating effective suppression of trimethylamine(TMA) format ion over the zeolites, which is due to the shape selective catalysis of zeolites. 對三甲胺表現出明顯的抑制效應可歸結于沸石的擇形催化效應。
- High reaction temperature and the existence of shape selective zeolite were in favor of benzene formation during cumene cracking. 高溫和擇形分子篩有助于提高異丙苯裂化生成苯的產(chǎn)率和選擇性；
- The results showed that the shape selective effect of the faujasite is obvious, and the thermodynamic balance exists between 2,6 DTBN and 2,7 DTBN. 結果表明,八面沸石對該反應過(guò)程有較好的擇形催化作用,兩種異構化產(chǎn)物(2,6二叔丁基萘和2,7二叔丁基萘)之間存在著(zhù)熱力學(xué)平衡,即兩種異構化產(chǎn)物可在酸性中心位上相互轉化。
- The latest application of zeolites shape selective catalysis in the production of ethylbenzene or cumene, along with synthesis of methylamine was briefly described. 綜述了90年代以來(lái)分子篩擇形催化在利用煉廠(chǎng)氣合成乙苯、異丙苯和甲胺等工業(yè)生產(chǎn)方面的最新應用。
- With the shape selected, type the text you want the main idea to represent. 選取該形狀,鍵入要表達中心思想的文字。
- selective catalyst reduction (SCR) 選擇催化還原
- A better understanding of the reaction mechanisms and the involved intermediates as well as their conversion dynamics on the catalyst surface is the key for the design of the active and selective catalysts. 為達到從動(dòng)力學(xué)控制反應的目的，對有關(guān)催化劑體系上反應所涉及的中間體及其轉化動(dòng)態(tài)學(xué)的研究還有待深入。
- The physicochemical features of ZSM 5 zeolite modified with phosphorus oxide were characterized by XRD, NMR, IR and BET, and the shape selective catalytic performance of the samples were investigated on MAT and fixed fluidized bed reactor. 采用磷氧化物對ZSM 5沸石進(jìn)行修飾改性 ,用XRD、NMR、IR、BET等物化手段對改性后沸石的物化性質(zhì)變化情況進(jìn)行了表征 ,并采用輕油微反和小型固定流化床催化裂化裝置對改性后的樣品進(jìn)行了反應性能評價(jià)。
- The primary trends are that highly active and selective catalysts for different structure to be aromatic substrates are of exploited,and the ammoxidation ... 指出開(kāi)發(fā)適合不同結構的芳香底物氨氧化反應的高活性、高選擇性的催化劑,并對其進(jìn)行深入的理論研究是今后的發(fā)展方向。
- To meet the needs for study the shape selectivity of zeolite molecular sieves,an approach for estimation of molecular dimensions was developed. 為滿(mǎn)足研究沸石分子篩擇形選擇性的需要，對分子尺寸的估算進(jìn)行了探討。
- Layered compounds have many functional characteristics, such as shape selecting catalysis, heat stability, and can be used in lithium batteries, superconducting materials and etc. 具有多種功能特征:如擇形催化作用、熱穩定性、用做鋰電池材料和超導材料等。
- If we can pull through this recession, we will be in good shape. 如果我們能渡過(guò)這段經(jīng)濟不景氣的時(shí)間，我們就會(huì )好多了。
- I am in no shape worthy of your father's care. 我完全不值得你父親的關(guān)懷。
- A strange shape could be seen through the fog. 在霧中隱約可見(jiàn)到一個(gè)奇怪的人形。
