酸强度

提高有机酸强度可增加次氯酸叔丁酯对BR的氯化效率；

The chlorination efficiency increased as the organic acid strength increased .

掺杂元素的Lewis酸强度对掺杂In2O3电性质的影响

Effect of the Lewis Acid Strength of Doping Elements on Electronic Properties of Doped In_2O_3

Hβ沸石具有酸性和结构选择性，载铂后具有双功能催化作用，但裂解较严重，调节沸石的酸强度可改变其催化性能。

H β zeolite possesses acidity and structure selectivity and has two function catalyses after loading platinum , but crocking is very serious .

研究了离子液体的酸强度、反应温度、反应时间和CO压力等对反应活性的影响。

The influence of acid strength of the ionic liquids , reaction temperature , reaction time , and CO pressure was studied .

磷化合物的加入使层柱交联累托石催化剂的B酸强度增加，但积炭反应主要不是由B酸强度决定，而是与强弱B酸中心数目的比例以及B酸和L酸的协同作用有关。

So it is considered that the coking reaction is related to the amount of acid sites and the coordinated action of Lewis / Brnsted acid sites .

Ag修饰后β沸石基本保持了原有的结构特征，且酸强度增加，醚化反应活性增强5.83%。

Ag-modified β - zeolite kept its original structural characters , but strength of acid increased , the etherification reactivity raised by 5.83 % .

NH3-TPD表征催化剂的酸强度随着Ga的掺入有所降低。

NH3-TPD show that the characterization of the acid strength of catalyst with the incorporation of Ga decreased .

用Hammett指示剂法测定了酸强度；

Its acidic strength was determined by Hammett indicators method .

噻吩的转化与分子筛的酸强度、酸密度以及催化剂的B酸、L酸均有密切关系。

The conversion of thiophene was much relative with not only the acid strength but also the density of acid including Lewis and Bronsted acids .

表面酸性表征结果表明：介孔氧化铝的酸强度和商品γ-Al2O3一致，但表面总酸量有所增加。

Acid feature characterization results show that the acidity of the mesoporous alumina is improved comparing with commerical γ - Al_2O_3 , though the acid strength is not changed .

采用Hammett指示剂法、吸附吡啶的TPD法，考察催化剂ZDSH的酸强度及其分布；

The surface acid strength and its distribution were characterized by Hammett indicator and Py TPD .

采用Hammett指示剂法测定样品表面的酸量和酸强度分布。

Also , the surface acidity of samples were determined by Hammett indicator method .

NH3-TPD测定的相应酸性中心数大约为2.55～0.45×10~（20）个/g，酸强度分布随硅铝比不同和水蒸气处理强度不同而变化。

Its acid strength distribution varies with different SiO_2 / Al_2O_3 ratio and steam treatment severity .

负载后HPA的酸强度得到了提高，其Keggin结构仍然保持。

The results show that the supported heteropoly acids still remain their keggin structure but the acid strength have been improved .

用Hammett指示剂法测定固体催化剂的酸强度及其分布

The Determination of the Acid Strength and its Distribution in Solid Catalyst by Hammett Indicator

用Hammett指示剂法测定其酸强度，用FT-IR对其进行表征。

The acidity of samples are determined with Hammett indicator method , and the characterizations of the samples are performed by FT-IR .

用Hammett指示剂法和吡啶吸附的FT-IR光谱法测定了其酸强度和酸中心类型；

Their acidic strength and type of acidic centers were determined by the methods of Hammett indicators and FT-IR spectroscopy of pyridine adsorption .

同时，探讨了SAPO分子筛表面的酸强度对低碳烯烃生成温度的影响。

The effect of the acid site strength on the light olefin formation temperature was also elucidated .

TPR表明，金属硫化物是加氢活性中心，硫化后的催化剂酸强度增加，但总酸量减小。

The results of TPR indicated that metal sulfides were the hydrogenation centers , after presulfiding the acid strength of catalyst increased , but the total acid quantity reduced .

利用溶剂法和丁胺滴定法对REY分子筛裂化催化剂的表面酸性进行了测定，得到了两套酸量-酸强度分布曲线。

Two sets of acidity-acid strength distribution curve were obtained with solvent method and butylamine titration on determining surface acidity of molecular sieve catalysts .

结果表明：催化剂活性位的Bronsted酸强度和空间结构是影响催化剂活性和选择性的主要因素。

Experimental results indicated that the catalytic activity was correlated closely with the acidity and the dimensional framework of the Bronsted acid site in catalysts .

对于SiO2负载PW及其盐催化剂，随着负载量的增加其表面积下降，但其酸强度有不同程度的增加。

It was found that the specific surface area of SiO_2 supported 12-phosphotungstic acid ( PW ) and its salts decreased ; but the acidity increased with the increase of loading .

在相同处理条件下，SO2-4/ZrO2SiO2催化剂的酸强度低于SO2-4/ZrO2的酸强度。

Under the same treatment conditions , the SO 2 - 4 / ZrO 2_SiO 2 catalyst showed lower acid strength than SO 2 - 4 / ZrO 2 catalyst , but a greater amount of acid .

在Al2O3上明显地延缓了Zr（SO4）2的分解和ZrO2的晶相转变.并且使酸量和酸强度有所提高。

The results showed that as a supporter Al 2O 3 could obviously retard the decomposition of Zr ( SO 4 ) 2 , crystal phase transform of ZrO 2 and considerably increase the acid content and acid strength of the catalysts .

利用Hammett指示剂、吸附吡啶的TPD、XRD、EDX、SEM、DTA／TG、FT&IR、LRS等技术对催化剂酸性及酸强度分布、物相结构、表面组成、催化剂的焙烧过程等进行了分析表征。

The surface acidity and acid strength distribution , the phase structure , the surface composition , and the calcination procedure of the catalysts were analyzed and characterized by Hammett indicator , Py-TPD 、 XRD 、 EDX 、 SEM 、 DTA / TG 、 FT-IR and LRS .

对非贵金属型加氢裂化催化剂，其载体的酸强度越高，酸中心的裂化活性越强，一定程度上符合液相的Brφnsted规则。

Main conclusions were as follows : It was demonstrated that the higher strength acid sites showed a higher hydrocracking activity , which to a certain extent was in compliance with the " Br ó nsted " rules developed in liquid phase .

当Cs~+接近P-OH、V-OH或Ti-OH的氧原子时，能极化氢氧基，提高了B酸强度。

WhenCs ~ + ion comes close to the oxygen atom of Ti-OH , P-OH and V-OH , the Cs ~ + ion can polarize the hydroxyl group and thus enhance the intensity of B acid .

NH3-TPD测定了SAPO-11的酸强度和酸中心数，并用矩形法求得脱附活化能，SAPO-11系属中等酸强度的分子筛。

The results indicated that both Bronsted and Lewis acid sites are present in the sample of SAPO-11 . From the spectra of NH3-TPD on SAPO-11 the amount and strength of acid sites were measured and NH3 desorption activation energy was calculated , showing that it has medium acidic strength .

其酸强度比普通酸（如100%硫酸）强。

The acid strength of such acid is higher than common acid .

固体磷酸催化剂的酸强度及其分布研究

Study on the Acid Strength and Distribution of Solid Phosphoric Acid Catalyst