Today , 69—75 Stereoselective hydrogenation of phenyl alkyl acetylenes on pillared clays supported palladium catalysts. Liquid phase hydrogenation of phenylacetylene on pumice supported palladium catalysts. Today 24 , 15—21 Inorganic materials as supports for palladium nanoparticles: Application in the semi-hydrogenation of phenylacetylene.
Azizi, M. Study on the acetylene hydrogenation process for ethylene production: Simulation, modification, and optimization. Pachulski, A. Bos, A. Process 32 , 53—63 Wilhite, B. Optimization of the selective semi-hydrogenation of phenylacetylene with supported palladium systems. Applied Catalysis 63 , — Carturan, G. Influence of metal dispersion on selectivity and kinetics of phenylacetylene hydrogenation catalyzed by supported palladium. PubMed Google Scholar.
Smith, G. Militello, M. Elemental palladium by XPS. Spectra 3 , — Thompson, T. Surface science studies of the photoactivation of TiO2 new photochemical processes. Tauster, S. Strong interactions in supported-metal catalysts.
Download references. You can also search for this author in PubMed Google Scholar. All authors have read and approved the manuscript. Correspondence to Fazhi Zhang. This work is licensed under a Creative Commons Attribution 4. Reprints and Permissions. Fan, Q. Sci Rep 7, Download citation. Received : 11 July Accepted : 06 January Published : 08 February Anyone you share the following link with will be able to read this content:. Sorry, a shareable link is not currently available for this article.
Provided by the Springer Nature SharedIt content-sharing initiative. By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate. Advanced search.
Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily. Skip to main content Thank you for visiting nature.
Download PDF. Subjects Catalyst synthesis Chemical engineering Heterogeneous catalysis Nanoparticles Structural properties. Abstract Developing effective heterogeneous metal catalysts with high selectivity and satisfactory activity for chemoselective hydrogenation of alkyne to alkene is of great importance in the chemical industry.
Introduction The chemoselective hydrogenation of alkyne, a hydrocarbon with a carbon-carbon triple bond, is of fundamental importance for the production of fine chemicals and industrial polymerization processes 1 , 2 , 3. Figure 1. Full size image. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Full size table. Figure 7. Figure 8. Table 2 The initial reaction rate r and rate constant k of phenylacetylene and styrene hydrogenation for three catalyst samples.
Figure Figure Reuse results of the PD sample for semihydrogenation of phenylacetylene to styrene. Catalyst preparation Supported Pd catalysts with 1. The scheme of phenylacetylene hydrogenation. Additional Information How to cite this article: Fan, Q. References 1 Zaera, F. Google Scholar 3 Teschner, D. Google Scholar 37 Yudanov, I. Google Scholar 40 Yang, K. Google Scholar 42 Li, C. Google Scholar 44 Duca, D.
Google Scholar 47 Azizi, M. They'll start with that size and then shrink down to zero size along their lifespan. This can easily be used to draw several versions of branches in the same tree or also to show different thickness based on distance, to support perspective effects. The Lifespan can be increased if you want the branches to appear longer, or the overall bush to grow taller. This is the lifespan of each branch.. Partgicles can split according to the splits count and angle.
The Lifespan controls the length of one such split branch. If you increase the number of splits with a given and fixed Lifespan , then the total length will grow too. Here's an example using shrinking lines plus alpha.
The branches appear thicker at the heart of the stems. But they appear still a little too symmetrical and 'perfect'. We will want to add some randomness to that set of parameters, so that the angles, lifespan and other parameters can vary across the generated bush, giving it a more natural appearance.
Here's another example, with longer lifespan or more splits, can you find what changed in the parameters? There are many other parameters and effects to lay with, such as 'Drag' try a negative value, or between 0.
Changing Colors with the Color Gradient Note that the branches all appear a bit dark with the initial presets from 'Winterbranches' The colors of the particles are affected by a color gradient, which in this example starts very dark all over. You can select a different gradient index 8 are available from the current gradient set. Or, you can change the currently selected gradient. Click the color gradient bar which appears all dark in this example. Select one of the color tabs Red, Green, Blue or Opacity to indicate which color channel you want to change.
Then you can interactively change its progression across the gradient. Left to right corresponds to the color evolution from start to end of a particle's life. In this example, particles would start dark red, go through dark green and end up dark blueish. Here we're adding a little more green towards the middle, after having raised the red and blue levels a little too in the left and right parts of the gradient.
Then had to go to work. Now saying not available AM but a new one is not up. Really wanted this program, as an much better then a utility for us scrapbooking mammas. I'm not a very good artist, but this software made me look GOOD!! Too bad, well, we must wait for better install program. Took some time to figure out how to install the patch, but I managaed. Copy and paste the patch into the folder where the program is at.
That's all it took. Messed up my ending. Was going to say it's worth the money, especially if they'd clean up their website a little. First installed their freeware version Project Dogwaffle. PD particles is limited as to what special images you can draw. Mainly -and this isn't a complaint - grass, weeds and shrubbery.
Dogwaffle has some preset flowers. Of course there is also more than one add-on for both. Tried them both and am impressed. The presets allow me to draw fields without any drawing talent. Of course, both are partly meant to increase your capabilities with other programs like Photoshop.
Plenty of tutorials, though you have to dig a little, and be patient. The website is a little haphazardly organized. Too much content, with some redundant links, needs some consolidation. So you may think you've seen it all, but sometimes there's more on another page. Installed on Vista Home Premium. As to Fubar's concerns in 23, used the suggestion another post made about the same problem a couple days ago. Used the freeware ERunt to back up the registry, then restore the registry settings after installing the program, so, hopefully the registry now points again to the up to date Visual Basic libraries for all programs.
The two software seem to work fine after the restore. I'm a last minute guy, like to read a lot of the comments, so this post probably won't do any good, but this program, though simple, can do a lot of diffent things.
If you see this with a few minutes left, I highly recommend it. I'd say the thumbs are right on this one. For my money, it's the best bargain I've seen in the few months I've been coming here. If you have any use for it, it's worth the Especially if you're going to anything more than the most basic graphics. Would be great if there was some tutorials in the help on how to use it!!!!!!!!!!!!!
Looks like some fabulous work could be done with it if one knew how? I've been trying to get a brush to a reasonable size for over half hour and cant find instructions anywhere on how to Cannot install patch: Runtime error '76' Path not found. Honestly I accept I have heard about computer drawings, but never have seen like this before. Great Software Loved it a LOT Thank God.. Still 1 hr remaining.. GREAT program! I LOVE it! One of the best ever offered here! Installs, runs fine on xp sp2, and it's EZ to make some wonderful pics with ti, just follow a tutorial and right away you are a good artist!
Try it and see! To Cat There is no 'installer' for this patch. Well I tried twice to download and install on Windows XP and each time the Setup file tried to uninstall my Microtek Scanner and sadly did that the second time as I hit the wrong button. I have the same Epson problem, it just open Epson scanner utility.
What's up with that? Do you think you could offer Archipelis Designer? I'd do almost anything to get my hands on that program! Oh, and I will download this program, and am sure I will love it, too. You guys are awesome. I could not get the installation to complete on Vista, the installer reported an error, and I don't feel like fighting with Vista to get this to install properly. I wish they had at least a downloadable demo version of their newer software; I might have tried it because this looks like a cool tool.
All rights reserved. Patent Pending. No, thanks Yes, I'd like to. Don't miss all the cool giveaways. Allow notifications in your browser. Giveaway of the day — PD Particles. PD Particles was available as a giveaway on September 28, ! Download trial PD Particles. Archipelis Designer. Poser 6 - SALE! Developed by Corel Corporation. Adobe Photoshop Elements. Developed by Adobe Systems Incorporated.
Sweet Home 3D. Import 3D objects and decide where to place them in the 3D model. CyberLink PhotoDirector. Developed by CyberLink Corp. Comments on PD Particles Thank you for voting! Please add a comment explaining the reason behind your vote.
Notify me of replies from other users. You can also add comment via Facebook. Reply Comment by Philip Staiger — 13 years ago — Did you find this comment useful? Finally, the two images are combined by using an additive blend, creating a composite anaglyph image. Note that Pdplayer 1. Download an updated composition that uses Pdplayer 1. The matrices given in the paper are converted to 3D lookup tables and applied to the left and right eye images. Interlaced Stereo This composition shows how to build an interlaced stereoscopic image with Pdplayer.
The hidden Interlaced Mask layer contains an image in which the even scanlines are black and the odd scanlines are white. This mask is used as an alpha source for the layer containing the right eye image, so that only its odd scanlines remain visible and obscure the odd scanlines of the lower, left eye, layer. Depending on the position of the Pdplayer window, the left and right images may appear reversed.
In that case, use the Invert Alpha checkbox to swap them. Since Pdplayer 1. Right click on the thumbnail and choose Save Target As This tutorial demonstrates how to use the new color key feature of Pdplayer 1.
0コメント