The adsorption capacity of La/TiO2 catalysts increases with lanthanum dosage in the acidic solution. The contribution of actual photodecomposition was determined by desorption process, after the photocatalytic reaction.

在酸性環(huán)境時性感美女毛片视频，當(dāng)觸媒以La金屬改質(zhì)后，將會大幅提升吸附能力，添加越多量吸附能力越強(qiáng)日日摸夜夜摸人人看亚洲综合，因此可促進(jìn)染料擴(kuò)散至TiO2表面而分解大片A；利用反應(yīng)結(jié)束后之脫附程序，將吸附於觸媒表面的染料脫附至水溶液中大线香蕉在线视频网站观看，以厘清實(shí)際光催化之降解量操操操操操操人人人人人操。

The Hammett indicator, TPD and IR methods are used to study the relation bet- ween the surface acidic properties of a P-La modified ZSM-5 zeolite catalyst and its toluol disproportion catalytic properties.

本文用Hammett指示劑法，程序升溫脫附法和紅外光譜法考察了磷和磷一改性ZSM－5沸石催化劑表面酸性變化對甲苯歧化催化劑性能影響日韩综合无码视频一区二区三区，認(rèn)為磷酸與沸石的直接作用轻点肏我在线观看91，使沸石的強(qiáng)酸中心消失。

Six experimental stages were designed in our procedure, those are:(1) metabolite recovery and tested sample preparation: the metabolites were recovered by Amberlite XAD-2 absorption, followed by MeOH elution and solvent concentration;(2) antioxidant detection and strain selection: samples were quantitatively analyzed by the inhibition effects on formation of lipid peroxides and TBARS to screen the strains able to produce antioxidants. According to the established screening methods, we chose out a strain of actinomycetes, designed as AMBL-029C;(3) antioxidant purification: the fermentation broth was recovered by a series of separation techniques including centrifugation, Amberlite XAD-2 absorption, followed by MeOH elution and a successive TLC purification. The resulting primary purified compound [temperately designed as AMBL-029C-TS] was further analyzed by HPLC to monitor its purity;(4) physical-chemical characteristics: judging from the acid-base fractionation experiments, and the pH and temperature stability tests, the compound was deduced to be a acidic compound with the properties of low polarity and highly pH and temperature stable;(5) mechanism of the antioxidant: in comparison with some other known antioxidants, TS was subjected to investigate its antioxidant mechanism, together with BHT,-tocopherol, as well as two streptomyces metabolites, homogentisic acid and -phenylpyruvic acid, which were previously isolated as the natural antioxidants in our laboratory.

針對本實(shí)驗(yàn)?zāi)康难侵夼访廊毡疽磺酆希覀冊O(shè)計(jì)了以下的實(shí)驗(yàn)步驟﹔（1）二次代謝物回收及檢測樣本處理：我們將發(fā)酵所得的培養(yǎng)上清液三级片AAA，利用疏水吸附性樹酯Amberlite XAD-2吸附回收，并以甲醇溶離及真空減壓濃縮脫水等方式處理中文字幕中日韩欧美一区，以取得提供抗氧化活性篩選之檢測樣本精品在线视频99；（2）抗氧化活性檢測及菌種篩選：以「過氧化脂質(zhì)」和「硫丙二醯尿」的生成量進(jìn)行定性定量分析以作為抗氧化物質(zhì)生產(chǎn)菌篩選之用；經(jīng)此篩選程序特级欧美AAAAAA视，我們選獲了具有抗氧化物質(zhì)高生產(chǎn)力的菌株av中文在线一级片，命名為AMBL-029C；（3）抗氧化物質(zhì)的分離純化：針對生產(chǎn)菌株的發(fā)酵回收處理液欧美激情亚洲日韩专区，以矽膠薄層色層分離法經(jīng)物質(zhì)層析純化后国产精品一级黄色毛片，并以高效能液相層析法(High performance liquid chromatography；HPLC)分析物質(zhì)可得一初級純化物質(zhì)成人精品视频在线日韩免费观看网站，命名為AMBL-029C-TS淫荡少妇一级性爱视频；（4）抗氧化物質(zhì)的物理化學(xué)性質(zhì)分析：由酸堿轉(zhuǎn)溶（acid-base fractionation）實(shí)驗(yàn)得知，此抗氧化物質(zhì)屬於中低極性的強(qiáng)酸性物質(zhì)亚洲黄色12级视频，對溫度（37℃-100℃）及酸堿度（pH3.0-13.0）均表現(xiàn)出高穩(wěn)定性伊甸园永久地址在线2022；（5）在抗氧化機(jī)制探討方面，我們針對數(shù)種不同的抗氧化機(jī)制進(jìn)行探討国内黄片免费看，即： 1亚洲欧美性爱一区。

Progress in researches on catalysts for fluidized bed oxychlorination of ethylene to make dichloroethane;2. The catalytic performance of CuCl2-KCl/MgO-Al2O3 catalysts was evaluated for the oxychlorination of ethane to produce vinyl chlorid.

采用浸漬法制備了不同含量MgO改性的γ-Al2O3，采用X射線衍射欧美性爱肛交在线观看、N2物理吸附可以直接免费看黄色视频的网址、NH3的程序升溫脫附和程序升溫還原等手段表征了催化劑的結(jié)構(gòu)、表面酸性和氧化還原性質(zhì)强奸人人操，并對CuCl2-KCl/MgO-Al2O3催化劑催化乙烷氧氯化制氯乙烯反應(yīng)進(jìn)行了活性評價免费欧洲毛片在线视频。