Chelated ruthenium catalysts have achieved highly chemoselective olefin metathesis reactions. Terminal and internal Z olefins were selectively reacted in the presence of internal E olefins. Products were produced in good yield and high stereoselectivity for formation of a new Z olefin. No products of metathesis with the internal E olefin were observed. Chemoselectivity for terminal olefins was ...

A highly-integrated experimental system for plasma decomposition of fuels was built. Experiments were conducted and confirmed that macromolecular chain hydrocarbons were cracked by large-gap dielectric barrier discharge under the excitation of a microsecond-pulse power supply. Alkanes and olefins with a C atom number smaller than 10 as well as hydrogen were found in the cracked products of n-de...

As a significant reaction in heterogeneous catalysis, methanol-to-hydrocarbon (MTH) conversion supplies sustainable way for the production of important platform chemicals, e.g., olefins, gasoline and aromatics. Although many commercial MTO plants have already been operated China recently, catalytic efficiency, i.e., olefins selectivity catalyst lifetime still need to be improved. Consequently, ...

Two Ag-Pd (nominal 1 % wt each) bimetallic catalysts supported on commercial activated carbon were synthesized and tested, for the first time, in hydrodechlorination (HDC) of trichloromethane (TCM) to obtain light olefins. different Pd precursors used, PdCl2 Pd(NO3)2, being resulting denoted as AgPdCl/C AgPdN/C, respectively. A monometallic Ag catalyst was also prepared comparison purposes. The...

Functionalized carbon nanofibers (CNF) are fascinating materials to be used as supports in Pd-based catalysts for the treatment of waste chloroform (TCM) produce light olefins through catalytic hydrodechlorination (HDC). The CNF were functionalized by HNO3, HCl, and urea. Compared Pd supported on un-treated CNF, all using support showed lower turnover frequency values with higher stability, owi...

The use of methanol over ZSM-5 and modified catalysts for the production light olefins has emerged as an effective new strategy this industry. In methanol-to-olefin (MTO) process, challenges are maintaining product selectivity prolonging lifetime catalyst manufacturing become

An asymmetric Heck reaction allows desymmetrization of substituted cyclic olefins in high dr and ee. A bisphosphine oxide is uniquely stereoselective for this purpose. Desymmetrization of bicyclic olefins via hydroarylation can also be realized in high ee.

In this study, the dehydrogenation component of Ga2O3 was introduced into ZSM-5 nanocrystals to prepare Ga2O3/ZSM-5 hollow fiber-based bifunctional catalysts. The physicochemical features of as-prepared catalysts were characterized by means of XRD, BET, SEM, STEM, NH3-TPD, etc., and their performances for the catalytic conversion of n-butane to produce light olefins and aromatics were investiga...

Abstract: In this study an appropriate computational approach was presented for estimating the boiling temperatures of 41 different types of olefins and their derivatives. Based on the guidelines of this approach, several structural indices related to the organic components were applied using graph theory. Meanwhile, in addition to evaluating the relation between the boiling temperatures of ole...