An adsorptive separation process and system are used for separation of multi-component fluid mixtures. The separation process and system may include establishing, in a fluid flow within the system, a concentration distribution of the fluid mixture components based upon the components' relative affinities to the adsorbent. The concentration distribution could be establishing using a simulated moving bed system, wherein it is possible to maintain separately-identifiable portions of the fluid flow, respectively rich in strongly-adsorbing, intermediately-adsorbing, and weakly-adsorbing compounds of the fluid mixture. An intermediate raffinate of high purity in the intermediately-adsorbing compound is directly withdrawn from the portion of the fluid flow rich in intermediately-adsorbing compound(s), providing a single-stage adsorptive separation of a compound having intermediate affinity to the adsorbent. The portion of the fluid flow rich in intermediately-adsorbing compound(s) may be established directly upstream from the point of fluid mixture feed injection into the fluid flow.

An adsorptive separation process and system are used for separation of multi-component fluid mixtures. The separation process and system may include establishing, in a fluid flow within the system, a concentration distribution of the fluid mixture components based upon the components' relative affinities to the adsorbent. The concentration distribution could be establishing using a simulated moving bed system, wherein it is possible to maintain separately-identifiable portions of the fluid flow, respectively rich in strongly-adsorbing, intermediately-adsorbing, and weakly-adsorbing compounds of the fluid mixture. An intermediate raffinate of high purity in the intermediately-adsorbing compound is directly withdrawn from the portion of the fluid flow rich in intermediately-adsorbing compound(s), providing a single-stage adsorptive separation of a compound having intermediate affinity to the adsorbent. The portion of the fluid flow rich in intermediately-adsorbing compound(s) may be established directly upstream from the point of fluid mixture feed injection into the fluid flow.

The invention provides non-naturally occurring microbial organisms having a butadiene pathway. The invention additionally provides methods of using such organisms to produce butadiene.

A renewable biofuel based on a highly efficient batch catalysis methodology for conversion of 1-butene to a new class of potential jet fuel blends. By tuning the catalyst and then using the dimer produced, the carbon use is about 95% or greater. This latter point will be particularly important in the future, where the source of raw materials (i.e., biomass/biofeedstock) is limited.

Provided are a long-acting prodrug of Rasagiline, which has application in the treatment of Central Nervous System diseases such as Parkinson's disease, preparation method and use thereof. The long-acting prodrug of Rasagiline has a structure of formula (I), wherein T is absent, or T is selected from ##STR00001##
each of R.sub.1 and R.sub.2 is independently selected from H, D, and alkyl; W is absent, or W is selected from (CH.sub.2).sub.n, wherein n is an integer selected from 1 to 15; X is absent, or X is selected from (CH.sub.2).sub.m, wherein m is an integer selected from 1 to 10; Y is absent, or Y is selected from —C(═O)NH—, —NHC(═O)—; R.sub.3 is selected from substituted or unsubstituted C.sub.1-C.sub.30 alkyl, substituted or unsubstituted C.sub.2-C.sub.30 alkenyl, substituted or unsubstituted C.sub.2-C.sub.30 alkynyl, substituted or unsubstituted C.sub.3-C.sub.30 cycloalkyl, cholane aliphatic group, —R.sup.3a—C(═O)O—R.sup.3b, —R.sup.3a—OC(═O)—R.sup.3b, —R.sup.3a—C(═O)NH—R.sup.3b, —R.sup.3a—NHC(═O)—R.sup.3b, —R.sup.3a—S(═O).sub.1-2O—R.sup.3b and —R.sup.3a—OS(═O).sub.1-2—R.sup.3b. ##STR00002##

A catalyst suitable for use in carbon oxide conversion reactions is described, said catalyst in the form of a shaped unit formed from an oxidic catalyst powder, said catalyst comprising 30-70% by weight of copper oxide, combined with zinc oxide, alumina and silica, having a Si:AI atomic ratio in the range 0.005 to 0.15:1, and having a BET surface area >105 m.sup.2/g and a copper surface area >37 m.sup.2/g catalyst. The catalyst is prepared by a co-precipitation method using an alumina sol.

A catalyst suitable for use in carbon oxide conversion reactions is described, said catalyst in the form of a shaped unit formed from an oxidic catalyst powder, said catalyst comprising 30-70% by weight of copper oxide, combined with zinc oxide, alumina and silica, having a Si:AI atomic ratio in the range 0.005 to 0.15:1, and having a BET surface area >105 m.sup.2/g and a copper surface area >37 m.sup.2/g catalyst. The catalyst is prepared by a co-precipitation method using an alumina sol.

A method for separating a raw feed gas stream using a plurality of membrane module stages. The raw feed gas stream may be from a biogas process. Off-gas from another unit process in the system, such as a temperature swing adsorption unit or liquefaction unit, may be used as a low pressure sweep gas on the low pressure side of at least one of the membrane module stages. In one example, the sweep gas is used in a first membrane module stage. In another example, a stripping membrane module stage is provided and the sweep gas is used in the stripping membrane module stage. Optionally, portions of the off-gas could be directed to other streams in the system for the purpose of balancing compressor power requirements.

A method for separating a raw feed gas stream using a plurality of membrane module stages. The raw feed gas stream may be from a biogas process. Off-gas from another unit process in the system, such as a temperature swing adsorption unit or liquefaction unit, may be used as a low pressure sweep gas on the low pressure side of at least one of the membrane module stages. In one example, the sweep gas is used in a first membrane module stage. In another example, a stripping membrane module stage is provided and the sweep gas is used in the stripping membrane module stage. Optionally, portions of the off-gas could be directed to other streams in the system for the purpose of balancing compressor power requirements.

A boarding intention determination device according to the present application includes an acquisition unit and a determination unit. The acquisition unit acquires a positional relationship between boarding position information representing a boarding spot for boarding a mobile object and user position information representing a current position of a user. The determination unit determines whether the user has an intention to board the mobile object based on the positional relationship that is acquired by the acquisition unit and behavior information representing behaviors of the user.