Siid-Chemie

LURGI and Siid-Chemie AG are developing a solid acid-catalyzed alkylation process termed LURGI EUROFUEL . The reactor is derived from tray distillation towers. Isobutane and suspended catalyst enter at the top of the... 

We thank Siid-Chemie for providing us the zeolite sample. 

Argonne National Laboratory. Argonne, Siid-Chemie Sign Agreement to Accelerate Fuel Cell Development. Argonne National Laboratory Press Release (28 November 2000). 

Later, Pattekar and Kothare [21] presented a silicon reactor fabricated by deep reactive ion etching (DRIE). It carried seven parallel micro channels of 400 pm depth and 1 000 pm width filled with commercial Cu/ZnO catalyst particles (from Siid-Chemie) trapped by a 20 pm filter, which also was made by DRIE, in the reactor. The reactor was covered by a Pyrex wafer applying anodic bonding. Details of the reactor are shown in Figure 2.3. 

Figure 5.10. Feed purification catalysts for different impurities. (Reproduced by permission of Siid-Chemie AG)...

Institute de Catalisis y Petroleoquimica, Catalytic Spectroscopy Laboratory, CSIC, E-28049-Madrid, Spain i Siid-Chemie AG, Research and Development, Catalytic Technologies, D-83052 Bmckmiihl—Heufeld, Germany... 

MAB acknowledges the support from the Spanish Ministry under grant CTQ2005-02802/PPQ and from the European Science Foundation COST Action D36/006/06. GM acknowledges support from the European Coordination Action Network "CONCORDE," the European Science Foundation COST Action D36/006/06, and Siid-Chemie AG. The authors are indebted to H. Knozinger for helpful discussions and to I. E. Wachs for providing recent results. 

CTO [Coal To Olefins] A general name for processes that convert coal to ethylene and/or propylene, used for making petrochemicals or fuels. Operated in South Africa, using catalysts developed and supplied by Siid-Chemie. 

GREENCAT A process for making oxide catalysts that minimizes the production of wastewater and uses no nitrates. Developed by Siid-Chemie and piloted in Louisville, KY, from 2001. The process received the Presidential Green Chemistry Challenge Award in 2003. 

MTP [Methanol To Propylene] Developed by Lurgi and offered for license in June 2000. The catalyst is provided by Siid-Chemie under the trade name MTProp. The first plant is to be built in China, for completion in 2008. 

Peracidox A process for removing sulfur dioxide from the tailgases from sulfuric acid plants by absorption in peroxomonosulfuric acid (Caro s acid). The peroxomonosulfuric acid is generated on site by the electrolytic oxidation of sulfuric acid. Developed by Lurgi and Siid-Chemie and first operated in 1972. 

Materials. The a,co-(3-hydroxypropyl)polydimethylsiloxane was a gift of Rhodia Silicones. All other chemicals were purchased from Aldrich, unless stated. 3,5-dinitrobenzoyl chloride (98%), 9H-carbazole-9-ethanol (95%), dichloromethane (for analysis), octamethylcyclotetrasiloxane (D, Shin-Etsu, 99%), TONSIL EXE0096 (Siid-Chemie), 2-bromoisobutyryl bromide (98%), HMTETA (1,1,4,7,10,10-hexamethyltriethylene tetramine, 98%), copper bromide (98%) and triethylamine (98%) were used as received. Methacryloyl chloride (97%) was distilled before use. All reactions were carried out under inert nitrogen atmosphere. 

The transport reactor appears ideal for efficiently regenerating the sorbent. The key to the successful operation of this unit is the attrition-resistant, reactive, and regenerable RTI-3 sorbent. Recently, the RTI-3 sorbent has been scaled up to a production level of 10,000lbs by Siid-Chemie Inc. (SCI). 

Despite the extensive list of potential drawbacks with existing commercial catalysts, few new WGS catalyst formulations have been commercialized in the past decades. Based on the data compiled by Armor,20,21 no new WGS catalysts were commercialized during the 1980s, while only two new catalysts were developed during the 1990s by the Siid-Chemie Group a ferrochrome catalyst promoted with Cu was developed for enhanced activity with suppressed Fischer-Tropsch by-product... 

In a recent patent issued to Siid-Chemie,23 an improvement to the CuZn-Al203 catalyst is described in which substitution of about 20% of the total Al with a (Cu,Zn)-hydrotalcite precursor containing a similar amount of aluminum improved both Cu dispersion and its activity. 

Although HTs could be relatively easy prepared on a lab-scale by co-predpitation, they are commerdally available in large amounts for industrial uses, for example by Siid-Chemie, which is one of the main industrial suppliers. An interesting example of application of HTs is the condensation and seledive hydrogenation of acetone to methyl isobutyl ketone (MIBK). 

The authors thank the Grant Agency of the Academy of Sciences for financial support (grant A 4072103), Siid-Chemie A.G. (Germany) for providing the alumina carrier, and AIST (Tsukuba, Japan) for TEM measurements. 

KIO clay is manufactured by high temperature acidic treatment from bavarian montmorillonite and was purchased from Siid Chemie as original sample. 

While both base metal and precious metal catalyst formulations performed well in a simulated high temperature WGS feed stream (-15% CO), precious metal catalysts were clearly superior when tested with a low temperature WGS feed stream (-5% CO). Results for a Siid-Chemie copper zinc catalyst (T2650) and a Siid-Chemie precious metal-ceria catalyst (PMS5) are shown in Figure 5, tested in a simulated low temperature WGS feed stream. Equilibrium was achieved for the PMS5 catalyst for... 

Transferred technology to Siid-Chemie, Inc. under a CRADA to optimize the performance of the CGO-based catalyst. 

Main Subcontractors University of Pennsylvania, Catalyte, LLC, Siid-Chemie, Inc. 

Most of the catalysts were commercial SA, a silica-alumina containing 13 wt% aliunina, from Ketjen K 10, an acidified montmorillonite, from Siid-Chemie FAU 2.5, the Linde tsrpe Y molecular sieve SK-41, from Alfa-Products FAU 15, MOR 11 and MOR49, dealuminated HY and Mordenites, were gifts from Zeocat MOR 6.5 was obtained from Norton MFI 25, a H-ZSM-5 zeolite, from Conteka. BEA 27, a beta zeolite, was synthesized according to Wadlinger et... 

Grateful appreciation is given to the following companies which provided photographic material Degussa AG, Hanau and Marl, HTE AG, Heidelberg, and Siid-Chemie AG, Heufeld. I am particular grateful to Prof V M. Schmidt, Mannheim, for his valuable advice in electrocatalysis and additional material. I also want to thank the munerous smdents who followed my courses in Mannheim. 

K. Rieblinger, inventors Siid-Chemie AG and Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung eV, assignees WO 5108063A1, 2005. 

A further group of nanocomposites are the well-known bentonites, revitalized at the end of the 1980s by Toyota Research. Bentonites are swellable, three-layer silicates consisting mainly of montmorillonite. The new organophilic bentonite Nanofil product family from Siid Chemie AG is based partly on the Bavarian calcium bentonites, which are activated by acid leaching [see Table 27 [77]], and do without cationic exchange. (Author s remark With a mean particle size of 4 pm, these are by no means nanoparticles ). 

Uses Thixotrope, antisettling agenL sag control agent for latex emulsion systems incl. coatings, sealants, and adhesives emulsion stabilizer, suspending agent for cosmetic and pharmaceutical creams and lotions, household cleaners Optigel LX [Siid-Chemie lnc[... 

Claytone XL f[Southern Clay Prods. http //www.scprod.com], Tixogel VP [Siid-Chemie Inc/Rheologicals http //www. rheoiogicai. com]... 

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