Hydrotreating and catalytic reforming

... adsorbents applied for many aspects, such as removal of color and odor, purification of waste water, and stripping of gaseous pollutants They can be prepared from any carbonaceous material by carbonization ... commercial sense OPCM-POM membrane reactor In addition, an optimal trade-off between catalytic activity and performance stability of POM catalyst is also crucial t...

Ngày tải lên: 09/09/2015, 10:13

... & TAME)   Alteration of the Chemical Composition Thermal Reforming  Catalytic Reforming  Catalytic vs Thermal Reforming      Catalytic Higher Octane Number: 90 to 100 Lower Temp ≈ 500°C ... (endothermic) Hydrocracking - 56 (exothermic) Catalytic Reforming Catalyst  Catalytic Characteristics Activity  Selectivity  Stability   Non -Catalytic Characteristics Mech...

Ngày tải lên: 22/04/2013, 11:13

... performing detailed kinetic studies of both AADH enzymes, we show that the recombinant enzyme is indistinguishable from the native AADH of A faecalis and benzylamine is a substrate during steady-state ... tryptophan tryptophylquinone as the redox prosthetic group in methylamine dehydrogenase Science 252, 817–824 Chistoserdov AY (2001) Cloning, sequencing and mutage...

Ngày tải lên: 19/02/2014, 07:20

... containing mM EDTA The auto-oxidation rates of Asp40Ala and Asp40Asn mutants were measured at 25 °C Oxidation of the sample was observed by Ó FEBS 2004 Haem proximal side of a haem- regulated phosphodiesterase ... binding, redox potential and auto-oxidation rates of Ec DOS PAS, and catalytic activities of full-length enzymes We found that the mutations...

Ngày tải lên: 19/02/2014, 16:20

... was dispersed inside the pore of support material (a) 3.3 Catalytic activities of Pt/SBA-15 in the oxidation of D-glucose The results of the oxidation of D-glucose carried out on Pt/SBA-15 catalyst ... Conclusions Figure HPLC-RID image of the products of D-glucose oxidation on PS-1 catalyst On the other hand, the reaction on Pt/SBA15 cat...

Ngày tải lên: 05/03/2014, 11:21

... according to Eqn (7) [20]: koff ẳ koff2ị ibuprofen= K2 ibuprofen ỵ koff3ị ibuprofen= K3 ibuprofen ị ỵ kỵ off 7ị where koff(2) and koff(3) indicate values of koff occurring at K2 < [ibuprofen] ... 10)1 s)1) Ibuprofen binding to tHSAheme-Fe(II)-NO Figure shows the binding isotherm for ibuprofen binding to tHSAheme-Fe(II)-NO Analysis of the dependence of the molar f...

Ngày tải lên: 06/03/2014, 01:20

... ligninolysis by wood-rotting fungi [2] To date, P2Ox from Trametes multicolor and Peniophora gigantea comprises the best studied enzyme, both from a biochemical and structural point of view [36] ... backbones of the A and C monomers show tighter associa- Stabilization of pyranose oxidase tion in L537G by 1.4 A, and only by 0.9 A in L537W E542K, compared to model...

Ngày tải lên: 07/03/2014, 03:20

... Proton relay system in chorismate synthase G Rauch et al A B Fig Ser16 and Ser127 residues acting in a proton relay system among His106, FMN and EPSP via a water molecule in the chorismate synthase ... Ser127Ala) and a double-mutant protein (Ser16AlaSer127Ala) In this article, we report that the replacement of both invariant serine residu...

Ngày tải lên: 07/03/2014, 05:20

... Divergences of rat alkaline phosphatase isozymes T Harada et al A B Fig Stereoviews of the residues near metal-binding site in (A) rat intestinal alkaline phosphatase- I (rIAP-I) and (B) rIAP-II ... Residues indirectly associating with the metal via water molecules Fig Immunological detection of rat intestinal alkaline phosphatase (rIAP) isozymes in rat...

Ngày tải lên: 07/03/2014, 17:20

... that lactate production in strain FI9078 was mediated by the enzyme encoded by the ldhB gene As expected, the enzyme produced by strain MG1363 was encoded by the ldh gene LDHB (ldhB gene product) ... Val253 and Ile254 in LDHB) The histidine and arginine residues directly involved in catalysis are identical in the two enzymes, and NADH binding is...

Ngày tải lên: 16/03/2014, 05:20

... Fe-containing catalytic subunit of CO dehydrogenase A catalytically active CooSI dimer has been previously purified and characterized from C hydrogenoformans [25] The 89- and 62-kDa polypeptides were assigned ... enzyme complex from Carboxydothermus hydrogenoformans After cell breakage and separation of the membrane fraction from the soluble fraction, 80–90% of...

Ngày tải lên: 23/03/2014, 21:20

... their quinone reductase activity Initial rate measurements show that all protein variants retain less than 1% of wild-type activity, using molecular oxygen as well as various quinones as final electron ... present in many different organisms in the eubacterial, fungal, plant and animal kingdom YhdA, previously described as an azoreductase [8], clearly possesses quinone reductas...

Ngày tải lên: 30/03/2014, 01:20

... sites of these enzymes, these enzymes may also share a catalytic mechanism with RNase H Substrate recognition mechanism of RNase H The crystal structure of human RNase H1 in complex with the substrate ... activity, because the number of the metal -binding sites found in the crystal structures of the enzyme–metal ion complex formed in the absence of the...

Ngày tải lên: 30/03/2014, 02:20

... here our kinetic studies of the isoaspartyl peptidase and asparaginase activities of the EcAIII Escherichia coli iaaA gene product and of the plant homolog LlA from Lupinus luteus Our findings, combined ... expression and purification of two amidohydrolytic enzymes, from Escherichia coli (EcAIII) and from Lupinus luteus (LlA), as well as their biochemical cha...

Ngày tải lên: 30/03/2014, 15:20