英文学术报告ppt模板
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篇一：国际会议口头报告ppt演讲内容准备模板
The Draft of Academic Prentation
国际会议的口头报告模板，每页ppt你需要讲什么东西需要分页详细写，尽量口语化，如下是本人参加比利时会议的模板，供大家参考。P1
开场白：
whoreI am so honored to be with you to communicate academic questions and ideas.
The tile of my academic prentation is “The preparation and catalytic performance of porous silica nanotube functioned with heteroatoms”
I shall only take ten minutes of your time.
I will talk about the topic on the preparation of porous materials. P2
First of all, i wanna introduce mylf. I come from nanjing university of technology, nanjing city, china.
P3
The content is listed as follows.
P4
All our rearches are conducted by the academic thoughts. Generally speaking, we are committed to porous materials. In order to explore high-performance functionalized materials for Pilot experiments and scale-up production; we tune the structure, such as composition and morphology step by step and optimize them further. What’s more, the possible synthesis mechanisms are also investigated. Today, the prentation is bad on the right-hand branch.
P5new wave
It is known that mesoporous silica have excellent characters as the catalyst carrier, such as……..
what are words什么意思But due to lack of active sites, we have to introduce organic or inorganic species as active sites. And the catalytic performance need to be further improved.
P6
As we know, the three factors including activity, scale and diffusion factor play decisive role in the catalysis, affecting the yield, lectivity, stability strongly. In our prentation, we mainly focus on the influence of scale factor on the catalysis.
P7
Due to lack of active sites for mesoporous silica, two main
methods (surface loading, modified framework) are widely reported, by which various organic or inorganic active sites can be immobilized on the surface or incorporated into the framework of mesopoous silica.
P8
Though various morphologies of mesoporos silica were widely synthesized, the synthesis of the mesoporos silica, with three simultaneous characteristics including doped metal, mesoporous structure and specific morphology, is always a challenge, which is rarely reported.
In other words, for our ca exploring a proper condition, at which the silicon and metal sources can simultaneously hydrolyze, can ensure a desired material.
P9
Next, let’s look at the synthetic steps. Firstly,…. Then, …. After that, …. At last, we obtained the
products.
多少分能出国留学
P10
哈佛大学官网In this work, by changing the synthesis conditions, such as …, and so on, the pure mesoporous silica with different morphologies were synthesized, including nanosphere, nanorod, helix, capsule and nanotube. We will focus on the preparation and catalytic
application of mesoporous silica with nanotube morphology.
买单英语P11有么说么
coat什么意思
the SEM images of samples: A1, A2, A3 are shown in the figure. It can be en that sample a1 is na
nowire-like with length of about 2μm and diameter of about 100nm. When the amount of ... is 0.04 g, the morphology of sample A2 became to be short and thick rods and the size is about 1μm in length and 400nm in diameter, respectively. With further increasing the amount of ..., the sample A3 and A4 turned to be spherical morphology. It also can be en that the diameters of samples A3 and A4 are substantially the same about 450nm. However, the spherical morphology of A4 is more regular than that of A3.
The XRD patterns showed four reflection peaks attributed to (100), (110), (200) and (210), respectively, due to the hexagonal sructure. P12
Then, we keep the same amount of ..., increasing the amount of .... We found that the length incread gradually. The XRD patterns also showed the hexagonal sructure of samples B1, B2, B3, B4.
P13
Moreover, an additional proof of the hexagonal symmetry structure is given by TEM and the FT pattern. The N2 adsorption-desorption isotherms of the samples B1, B2, B3, B4
exhibit a typical type-IV isotherm.
According to the table of structural parameters, we can find that the specific surface area and total pore volume increa gradually, the thickness of wall decrea and there is no obvious change in diameter.
P14中英文翻译器
ayhFurthermore, the possible synthesis mechanism of the mesoporous silica nanotube in dual templates system was propod. We suggest that due to electrostatic repulsion between positively charged ammonium ions from hydrated ammonia molecules and hydrophilic groups of ..., especially in ammonia (NH3, 25wt.%) solution, the high concentrated ammonium ions provide a crowded and repulsive space to prevent the conjunction of ... molecules, leading to the formation of the rod-like micelles as template to form pore structure instead of sphere-like ones.The role of co-template ... is suggested to tune the length of rod-like micelles by arranging itlf along the axis of channel with PEO and PPO part immerd in the hydrophilic and the hydrophobic group of CTA+ respectively. As a result, the mesoporous nanotube with different length will be synthesized. However, the non-polar ... micelles are not affected by positively charged ammonium. When the amount of co-template incread further, the non-polar ... micelles tend to control the
